APA引文

Davis, P. H., & Heywood, V. H. (1973). Principles of angiosperm taxonomy. Huntington.

Chicago Edition Citation

Davis, P. H., and V. H. Heywood. Principles of Angiosperm Taxonomy. New York: Huntington, 1973.

MLA引文

Davis, P. H., and V. H. Heywood. Principles of Angiosperm Taxonomy. Huntington, 1973.

警告：这些引文格式不一定是100％准确.