Franklin

MLA

Schummer, A, R Nickel, and W. O Sack. The Viscera of the Domestic Mammals. 2d rev. ed. Berlin: P. Parey , 1979.

APA

Schummer, A., Nickel, R., & Sack, W. O. (1979). The viscera of the domestic mammals. 2d rev. ed. Berlin: P. Parey .

Chicago

Schummer, A., R Nickel, W. O Sack, and R Nickel. The Viscera of the Domestic Mammals. 2d rev. ed. Berlin: P. Parey, 1979.