The possessive form for the singular noun Peter is Peter's.
Example: I met Peter's parents at the picnic.
The possessive form for the plural noun Peters is Peters'.
Example: The two Peters' fathers are brothers.
The possessive form of "Peters" is written as "Peters's" when indicating something belonging to Peter.
The possessive form of the plural noun sorts is sorts'.
The grammatically correct form is women's rights.It is always written in the possessive form as it refers to the rights of women.
The possessive form of the singular noun sculptor is sculptor's.example: The sculptor's work is on display at the museum.
Mary Peters has written: 'Peters Palatables'
The possessive form of the proper noun Babar the Brave is Babar the Brave's or Babar's.Examples:Babar the Brave's adventures are written in stories.Babar's adventures are written in stories.
The plural possessive noun would be written as the butterflies' wings.
Eric Peters has written: 'Eric Peters' -- subject(s): Catalogs
Edmond Frank Peters has written: 'Peters of New England'
Pamela Peters has written: 'Biotechnlogy'
Ruudt Peters has written: 'Change'
Sabine Peters has written: 'Feuerfreund'
Ursula Peters has written: 'Frauendienst'