APA (7th ed.) Citation

Market House Books, Blackmore, S., & Tootill, E. (1984). Penguin dictionary of botany. Allen Lane.

Chicago Style (17th ed.) Citation

Market House Books, Stephen Blackmore, and Elizabeth Tootill. Penguin Dictionary of Botany. London: Allen Lane, 1984.

MLA (9th ed.) Citation

Market House Books, et al. Penguin Dictionary of Botany. Allen Lane, 1984.