APA (7th ed.) Citation

Briggs, D., & Walters, S. M. (1984). Plant variation and evolution (2. ed.). Cambridge Univ. Press.

Chicago Style (17th ed.) Citation

Briggs, D., and S. M. Walters. Plant Variation and Evolution. 2. ed. Cambridge [u.a.]: Cambridge Univ. Press, 1984.

MLA (9th ed.) Citation

Briggs, D., and S. M. Walters. Plant Variation and Evolution. 2. ed. Cambridge Univ. Press, 1984.