APA

Forey P. L., Humphries C. J., Kitching I. J., Scotland R. W., Siebert D. J., Williams D. M. & The Systematics Association. (1992). Cladistics : a practical course in systematics. Oxford, NY: Oxford University Press.

Chicago

Forey Peter L, Humphries Christopher J, Kitching Ian J, Scotland Robert W, Siebert Darrell J, Williams David M and The Systematics Association. 1992. Cladistics : a practical course in systematics. Oxford, NY: Oxford University Press.

Harvard

Forey P. L., Humphries C. J., Kitching I. J., Scotland R. W., Siebert D. J., Williams D. M. and The Systematics Association. (1992). Cladistics : a practical course in systematics. Oxford, NY: Oxford University Press.

MLA

Forey Peter L, Humphries Christopher J, Kitching Ian J, Scotland Robert W, Siebert Darrell J, Williams David M and The Systematics Association. Cladistics : a practical course in systematics. Oxford, NY: Oxford University Press. 1992.