Cita APA (7a ed.)

Grass, G., & Heim, M. H. (1999). My century. Harcourt.

Cita Chicago Style (17a ed.)

Grass, Günter, y Michael Henry Heim. My Century. New York: Harcourt, 1999.

Cita MLA (9a ed.)

Grass, Günter, y Michael Henry Heim. My Century. Harcourt, 1999.