APA (7th ed.) Citation

Ax, P. (1987). The phylogenetic system: The systematization of organisms on the basis of their phylogenesis. Wiley.

Chicago Style (17th ed.) Citation

Ax, Peter. The Phylogenetic System: The Systematization of Organisms on the Basis of Their Phylogenesis. Chichester [West Sussex] ; New York: Wiley, 1987.

MLA (9th ed.) Citation

Ax, Peter. The Phylogenetic System: The Systematization of Organisms on the Basis of Their Phylogenesis. Wiley, 1987.