APA-referens (7:e uppl.)

(1990). Man and his environment: In harmony and in conflict. The Center for Humanities.

Chicago-referens (17:e uppl.)

Man and His Environment: In Harmony and in Conflict. [S.l.]: The Center for Humanities, 1990.

MLA-referens (9:e uppl.)

Man and His Environment: In Harmony and in Conflict. The Center for Humanities, 1990.

Varning: dessa hänvisningar är inte alltid fullständigt riktiga.