Cita APA

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

Citación estilo Chicago

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

Cita MLA

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