The Associated Press Stylebook says “use only an apostrophe” for singular proper names ending in S: Dickens’ novels, Hercules ...

When you want to show that something belongs to that person or thing, you add a possessive apostrophe and an 's'. For example: The cat's tail was fluffy. The 's' shows that the tail belongs to the ...

A decision to sanction the use of the "idiot's apostrophe" in the German language has provoked a furious backlash, with some media commentators accusing officials of "bowing" to English.

When you want to show that something belongs to that person or thing, you add a possessive apostrophe and an 's'. For example: The cat's tail was fluffy. The 's' shows that the tail belongs to the ...