APA način citiranja (7. izdanje)

Environmental Education Project (Portland, Or.). (1978). Clearing. Environmental Education Project.

Čikaški stil citiranja (17. izdanje)

Environmental Education Project (Portland, Or.). Clearing. Portland, Or.: Environmental Education Project, 1978.

MLA način citiranja (9. izdanje)

Environmental Education Project (Portland, Or.). Clearing. Environmental Education Project, 1978.