John Portsmouth. (1943). Practical poultry keeping: By the advisory staff of poultry world. Iloiffe Books Ltd.
Chicago Style aipamenaJohn Portsmouth. Practical Poultry Keeping: By the Advisory Staff of Poultry World. Iloiffe Books Ltd, 1943.
MLA aipamenaJohn Portsmouth. Practical Poultry Keeping: By the Advisory Staff of Poultry World. Iloiffe Books Ltd, 1943.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.