Παραπομπή APA

Grass, G., & Manheim, R. (1969). Dog Years. Penguin Books.

Παραπομπή Chicago Style

Grass, Gunter, και Ralph Manheim. Dog Years. Penguin Books, 1969.

Παραπομπή MLA

Grass, Gunter, και Ralph Manheim. Dog Years. Penguin Books, 1969.