APA-viite

Tortora, G. J. (1973). Plant form and function: An introduction to plant science. Macmillan.

Chicago-tyylinen lähdeviittaus

Tortora, Gerald J. Plant Form and Function: An Introduction to Plant Science. New York: Macmillan, 1973.

MLA-viite

Tortora, Gerald J. Plant Form and Function: An Introduction to Plant Science. Macmillan, 1973.