Cita APA (7th ed.)

Briggs, D., & Walters, S. M. (2016). Plant variation and evolution (Fourth edition.). Cambridge University Press.

Cita Chicago (17th ed.)

Briggs, D., i S. M. Walters. Plant Variation and Evolution. Fourth edition. Cambridge: Cambridge University Press, 2016.

Cita MLA (9th ed.)

Briggs, D., i S. M. Walters. Plant Variation and Evolution. Fourth edition. Cambridge University Press, 2016.