APA (7th ed.) Citation

Clapham, A. R., Tutin, T. G., Warburg, E., & Roles, S. J. (1963). Flora of the British Isles: Illustrations. Cambridge University Press.

Chicago Style (17th ed.) Citation

Clapham, Arthur Roy, Thomas Gaskell Tutin, E.F Warburg, and Sybil J. Roles. Flora of the British Isles: Illustrations. Cambridge: Cambridge University Press, 1963.

MLA (9th ed.) Citation

Clapham, Arthur Roy, et al. Flora of the British Isles: Illustrations. Cambridge University Press, 1963.