The spelling writer's is the singular possessive.
The plural form of the noun writer is writers.
The plural possessive form is writers'.
examples:
I've been asked to speak at a writers' conference.
The Annual Writers' Club meeting took place at the local coffee shop.
The plural form of the noun writer is writers.The plural possessive form is writers'.example: I've been asked to speak at a writers' conference.
The plural form of the noun writer is writers.The plural possessive form is writers'.The plural form of the noun story is stories.The plural possessive form is stories'.The plural form of the noun farmer is farmers.The plural possessive form is farmers'.
Writer's is the singular possessive form of writer, e.g. I've got writer's crampWriters' is the plural possessive form of writers, e.g. The Writers' Guild of Great Britain
Singular possessive: secretary's Plural: secretaries Plural possessive: secretaries'
The plural is lads. The plural possessive is lads'.
The plural is relatives. The plural possessive is relatives'.
The plural form is suffixes. The plural possessive is suffixes'.
The plural form is stepsisters. The plural possessive is stepsisters'.
The plural form is Mexicans. The plural possessive is Mexicans'.
The plural form is echoes. The plural possessive is echoes'.
The plural form is inches. The plural possessive is inches'.
Studies' is the plural possessive of study.