APA (7th ed.) Citation

Colette & Phelps, R. (1980). Letters from Colette (lst ed.). Farrar, Straus, Giroux.

Chicago Style (17th ed.) Citation

Colette and Robert Phelps. Letters from Colette. lst ed. New York: Farrar, Straus, Giroux, 1980.

MLA (9th ed.) Citation

Colette and Robert Phelps. Letters from Colette. lst ed. Farrar, Straus, Giroux, 1980.