APA (7th ed.) Zitazioa

Toothill, E. (1984). The Penguin dictionary of botany. Penguin Books.

Chicago Style (17th ed.) Zitazioa

Toothill, Elizabeth. The Penguin Dictionary of Botany. Harmondsworth: Penguin Books, 1984.

MLA (9th ed.) Zitazioa

Toothill, Elizabeth. The Penguin Dictionary of Botany. Penguin Books, 1984.