When joint possession is being shown with nouns, or with an organization’s or business firm’s name, use the possessive form only in the last word of the noun or name.Food and Drug Administration’s policy Farrar, Straus & Giroux’s books Centers for Disease Control and Prevention’s Task Force Hammond and Horn’s study When possession is individual, each noun takes the possessive form.We matched the infant’s and mother’s records.Note: When one of the nouns takes a possessive pronoun, the other nouns take the possessive as well.I presented the intern’s and my workups. ...
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