Cita APA (7a ed.)

Heller, P., Schaefer, J., & Ehrlich, E. (1969). German essays and expository prose (1. print.). Macmillan.

Cita Chicago Style (17a ed.)

Heller, Peter, Joerg Schaefer, y Edith Ehrlich. German Essays and Expository Prose. 1. print. New York, NY: Macmillan, 1969.

Cita MLA (9a ed.)

Heller, Peter, et al. German Essays and Expository Prose. 1. print. Macmillan, 1969.