APA

Hancock J., Elliott H. F. I., Gillmor R. & Hayman P. (1978). The herons of the world. New York: Harper & Row.

Chicago

Hancock James, Elliott Hugh F I, Gillmor Robert and Hayman Peter. 1978. The herons of the world. New York: Harper & Row.

Harvard

Hancock J., Elliott H. F. I., Gillmor R. and Hayman P. (1978). The herons of the world. New York: Harper & Row.

MLA

Hancock James, Elliott Hugh F I, Gillmor Robert and Hayman Peter. The herons of the world. New York: Harper & Row. 1978.