APA

Snow D., British Museum (Natural History), . (1988). A study of blackbirds. London: British Museum, Natural History.

Chicago

Snow David, British Museum (Natural History), . 1988. A study of blackbirds. London: British Museum, Natural History.

Harvard

Snow D., British Museum (Natural History), . (1988). A study of blackbirds. London: British Museum, Natural History.

MLA

Snow David, British Museum (Natural History), . A study of blackbirds. London: British Museum, Natural History. 1988.