APA (7. basım) Alıntı

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

Chicago Style (17. basım) Atıf

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

MLA (9th ed.) Atıf

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

Uyarı: Bu alıntı herzaman %100 doğru olmayabilir..