Portman-graham r. (1975). Mating and whelping of dogs (3.). London.
Chicago Edition CitationPortman-graham r. Mating and Whelping of Dogs. 3. London, 1975.
MLA Edition CitationPortman-graham r. Mating and Whelping of Dogs. 3. London, 1975.
Warning: These citations may not always be 100% accurate.