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To write French-language abbreviations correctly, follow the guidelines below.
Use upper-case letters; do not use periods:
Do not retain the accent on initial letters:
The gender of an acronym is normally that of the initial noun:
But acronyms from another language take the gender of the French equivalent of the generic noun:
Use a period with the abbreviations for Monsieur and Messieurs, but not with those for Madame and Mesdames:
but
However, when inserting the abbreviations Mme and Mmes into English text, add a period:
(Note that the French title Madame may refer to unmarried as well as married women.)
Messrs. is the English equivalent of MM.
Messrs. Jalbert and Roussel
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