APA引文

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.

MLA引文

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

警告：這些引文格式不一定是100％准確.