There are two accepted forms for possessive singular nouns ending in s:
Add an apostrophe (') after the existing s at the end of the word: Russ'
Add an apostrophe s ('s) after the existing s at the end of the word: Russ's
Examples:
Russ' bicycle is new.
Russ's bicycle is new.
The singular, possessive noun is Jewess's. Example: The scholarship is an anonymous Jewess's contribution.
The singular possessive form is week's.
The singular possessive form is classmate's.
The singular possessive form for the noun gypsy is gypsy's.
The singular possessive form for country is county's.
The singular, possessive noun is Jewess's. Example: The scholarship is an anonymous Jewess's contribution.
plural possessive form: babies' singular possessive form: baby's
The singular possessive form is evening's. The plural possessive form is evenings'.
The singular possessive form is mother's.The plural possessive form is mothers'.
sculpture's
The plural of porch is porches.
The possessive form of the singular noun judge is judge's.Example: The witness had the judge's complete attention.
The singular possessive form is week's.
The singular form of the plural noun geese is goose.The singular possessive form is goose's.example: The boy found a goose's feather and stuck it on his hat.
The singular possessive form is classmate's.
The possessive form is Amos's.
The singular possessive form for the noun gypsy is gypsy's.