For apostrophes with possessive proper nouns, remember these three guidelines: If the noun is singular, add ’s (Kansas’s). If the noun is plural but does not end in s, add ’s (the Magi’s gifts). If the noun is plural and ends in s, add just an apostrophe (the Beatles’ greatest hits).

To make these words possessive, we only add an apostrophe to the end of the word. The scissors’ cut was sharp. The pants’ seam has been loosened. When a singular proper noun ends with an ‘s’, add an apostrophe + s (‘s).