APA استشهاد

John Gould. A century of birds from the Himalaya mountains. Oxford & IBH publishing Co.

استشهاد بنمط شيكاغو

John Gould. A Century of Birds from the Himalaya Mountains. New Delhi: Oxford & IBH publishing Co.

MLA استشهاد

John Gould. A Century of Birds from the Himalaya Mountains. Oxford & IBH publishing Co.