Gianluigi Filippelli

The plugin add a shortcode in order to link a paper using its doi code. You can also use an other shortcode to resolve doi code and publish a full citation apa formatted. It is also a shortcode for manual citations.
<h3>Link doi</h3>
Using the standard for doi link, the plugin introduce a shortcode in order to create a link to a paper provided by doi. 
How to use the shortcode:
[ctdoi code=”…”]Title of the paper[/doi]
<h3>Doi resolver</h3>
The plugin send the doi code to <a href="https://search.crossref.org/" rel="nofollow ugc">Crossref Metadata Search</a>, get the information and publish a full citation in apa standard with the shortcode [ctdoiresolve …]. 
How to use the shortcode:
[ctdoiresolve code=”…”]
There are also three optional parameters:
[ctdoiresolve code=”…” arxiv=”…”]
if the paper has an arXiv version
[ctdoiresolve code=”…” pdfurl=”…”]
if the paper has a free pdf version
[ctdoiresolve code=”…” archiveurl=”…”]
if the paper has a free version on <a href="https://archive.org/" rel="nofollow ugc">archive.org</a>
<h3>Manual citations</h3>
There’s also a shortcode for manual citations, [paperdata …]. You can use it with the following syntax:
[paperdata auth=”author/s name/s” year=”…” title=”…” journal=”…” vol=”…” issue=”…” pages=”…” code=”…”]
You can also use the arxiv, pdfurl, archiveurl parameters.
<h3>Styling</h3>
You can style citations adding in your css theme the class “paperdata”.
<h3>External service</h3>
Digital Object Identifier, or DOI, is a persistent identifier used to uniquely identify objects, standardized by the International Organization for Standardization (ISO). DOIs are mainly used to identify academic, professional, and government information, such as journal articles, research reports and data sets, official publications.
Citations tools uses the <a href="http://search.crossref.org/help/api" rel="nofollow ugc">CrossRef Metadata API</a> to retrieve complete publication information using the doi code as a search query. CrossRef is a part of the <a href="https://dx.doi.org/" rel="nofollow ugc">doi system</a>.

Citations tools

Some tools for scientific and editorial bloggers.

plosalm

PLOS ALM Widget will display PLOS article-level metrics (ALMs) based on the ALM 2.0 API. It can accommodate the display of ALMs for a single or multiple articles. Users will be able to add the widget plug-in to any WordPress blog. To populate the widget, users enter a PLOS article DOI (e.g., 10.1371/journal.pone.0000039) in the control panel. Once added, the widget displays the ALMs on the appropriate page. If any of the metrics have no data or 0 value, that metric will not display in the widget. If no metrics exist for an article, the entire article will not display. If there are no articles in the widget with ALMs, the widget will not display.
Possible use cases for the widget include:
<ol>
<li>A researcher with a WordPress webpage who has published one or more articles with PLOS</li>
<li>A lab webpage on WordPress with multiple researchers who have published one or more articles with PLOS</li>
<li>University department or funding agency webpage on WordPress with many researchers and many PLOS papers</li>
</ol>

PLOS ALM Widget

PLOS ALM Widget will display PLOS article-level metrics (ALMs) based on the ALM 2.0 API.

Citations tools vs PLOS ALM Widget