APA

Abercrombie M., Hickman C. & Johnson M. (1980). The Penguin dictionary of biology. Harmodsworth: ELBS.

Chicago

Abercrombie M, Hickman C.J and Johnson M.L. 1980. The Penguin dictionary of biology. Harmodsworth: ELBS.

Harvard

Abercrombie M., Hickman C. and Johnson M. (1980). The Penguin dictionary of biology. Harmodsworth: ELBS.

MLA

Abercrombie M, Hickman C.J and Johnson M.L. The Penguin dictionary of biology. Harmodsworth: ELBS. 1980.