possessives

In accordance with AP style, use the following rules to form possessives:

• In singular and plural nouns that don’t end in s, add ’s: the author’s book, the children’s toys
• In singular nouns that end in s, add ’s: the virus’s spread, the bus’s route
• In plural nouns that end in s, add only an apostrophe: the authors’ books, the professors’ partnership
• In proper nouns that end in s, add only an apostrophe: James’ coat, Odysseus’ journey
• In accordance with the rule stated in the previous bulleted point, for NC State college acronyms that end in s, add only a single apostrophe at the end: CALS’ students, CHASS’ faculty