The possessive is campus's.
The possessive of a singular noun can always use apostrophe-S. It is only when the plural is formed by adding S or ES that the apostrophe only is used (e.g. campuses becomes campuses').
The correct spelling is "campus's" when showing possession.
The correct spelling of the possessive form of "people" is "people's."
The correct spelling is "gentlemen's".
The correct spelling of the possessive form of "women" is "women's."
The correct possessive form of dynasty is "dynasty's."
The correct spelling of the singular possessive form of "municipality" is "municipality's."
The correct spelling for the possessive form of "college" is "college's."
The correct spelling of the possessive form of "people" is "people's."
The correct spelling is "gentlemen's".
The correct spelling of the possessive form of "women" is "women's."
The correct possessive form of dynasty is "dynasty's."
monies'
heroes
kids'
The possessive of scientist is scientist's (apostrophe S).
The singular possessive form is story's.
The correct spelling of the singular possessive form of "municipality" is "municipality's."
Yes, pony's is the correct singular possessive form.example: The pony's stall was very clean.