APA (7th ed.) Citation

Boyce, P., Sellars, P., Farrer, A., & Galloway, T. (1993). The genus arum. H.M.S.O..

Chicago Style (17th ed.) Citation

Boyce, Peter, Pandora Sellars, Ann Farrer, and Tim Galloway. The Genus Arum. London: H.M.S.O., 1993.

MLA (9th ed.) Citation

Boyce, Peter, et al. The Genus Arum. H.M.S.O., 1993.