Style de citation APA (7e éd.)

Spender, S., & Bartlett, L. (1980). Letters to Christopher. Black Sparrow Press.

Style de citation Chicago (17e éd.)

Spender, Stephen, et Lee Bartlett. Letters to Christopher. Santa Barbara: Black Sparrow Press, 1980.

Style de citation MLA (8e éd.)

Spender, Stephen, et Lee Bartlett. Letters to Christopher. Black Sparrow Press, 1980.