Παραπομπή APA

Abercrombie, M. (1977). Penguin dictionary of biology. Penguin Books.

Παραπομπή Chicago Style

Abercrombie, M. Penguin Dictionary of Biology. London: Penguin Books, 1977.

Παραπομπή MLA

Abercrombie, M. Penguin Dictionary of Biology. Penguin Books, 1977.