APA-viite (7. p.)

Barry, T. (1994). The challenge of cross-border environmentalism: The U.S. - Mexico case. Border Ecology Project.

Chicago-viite (17. p.)

Barry, Tom. The Challenge of Cross-border Environmentalism: The U.S. - Mexico Case. Albuguerque, N.M. : Resource Center Press ; Bisbee, Ariz: Border Ecology Project, 1994.

MLA-viite (9. p.)

Barry, Tom. The Challenge of Cross-border Environmentalism: The U.S. - Mexico Case. Border Ecology Project, 1994.