Pluralize Numbers and Abbreviations Without Apostrophes

sad apostrophe

sad apostrophe by Tanya Hart Attribution-NonCommercial-ShareAlike License

If you are talking about more than one road traffic accident (RTA) or patent ductus arteriosus (PDA) should you write RTA’s and PDA’s? Many people do, but they should not. Its RTAs and PDAs.

Don’t make the same mistake yourself. This excellent short post explains when not to use an apostrophe.

http://blog.apastyle.org/apastyle/2013/11/pluralize-numbers-and-abbreviations-without-apostrophes.html

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