APA

Abercrombie M., Hickman C., . (1977). The Penguin dictionary of biology. London: Allen lane , Viking Press.

Chicago

Abercrombie M, Hickman C.J, . 1977. The Penguin dictionary of biology. London: Allen lane , Viking Press.

Harvard

Abercrombie M., Hickman C., . (1977). The Penguin dictionary of biology. London: Allen lane , Viking Press.

MLA

Abercrombie M, Hickman C.J, . The Penguin dictionary of biology. London: Allen lane , Viking Press. 1977.