APA (7th ed.) Citation

De Gregorio, G. (1981). Joe DiMaggio, an informal biography. Stein and Day.

Chicago Style (17th ed.) Citation

De Gregorio, George. Joe DiMaggio, an Informal Biography. New York: Stein and Day, 1981.

MLA (9th ed.) Citation

De Gregorio, George. Joe DiMaggio, an Informal Biography. Stein and Day, 1981.