Citazione APA

Briggs,D, & walters,s m. (1990). Plant variation and evolution. Cambridge University Press.

Stile di citazione Chicago

Briggs,D, e walters,s m. Plant Variation and Evolution. United Kingdom: Cambridge University Press, 1990.

Citazione MLA

Briggs,D, e walters,s m. Plant Variation and Evolution. Cambridge University Press, 1990.