Cita APA

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

Citación estilo Chicago

Grass, Gunter, and Michael Henry Heim. My Century. New York: Harcourt, 1999.

Cita MLA

Grass, Gunter, and Michael Henry Heim. My Century. Harcourt, 1999.