Παραπομπή APA

Grass, G., & Manhaim, R. (1969). Dog years. Penguin.

Παραπομπή Chicago Style

Grass, Gunter, και Ralph Manhaim. Dog Years. Middlesex: Penguin, 1969.

Παραπομπή MLA

Grass, Gunter, και Ralph Manhaim. Dog Years. Penguin, 1969.