APA ציטוט

Portman-graham r. (1975). Mating and whelping of dogs (3.). London.

Chicago Edition Citation

Portman-graham r. Mating and Whelping of Dogs. 3. London, 1975.

ציטוט MLA

Portman-graham r. Mating and Whelping of Dogs. 3. London, 1975.