Παραπομπή APA

Harban singh. (1972). Livestock and poultry production (11th ed.). prentice-hall.

Παραπομπή Chicago Style

Harban singh. Livestock and Poultry Production. 11th ed. prentice-hall, 1972.

Παραπομπή MLA

Harban singh. Livestock and Poultry Production. 11th ed. prentice-hall, 1972.