APA-viite (7. p.)

Manahan, G. V. (1998). Ecology, humans and the geography of the environment (second of two parts). Philippine Architects' Journal.

Chicago-viite (17. p.)

Manahan, Geronimo V. "Ecology, Humans and the Geography of the Environment (second of Two Parts)." Philippine Architects' Journal 1998.

MLA-viite (9. p.)

Manahan, Geronimo V. "Ecology, Humans and the Geography of the Environment (second of Two Parts)." Philippine Architects' Journal, 1998.

Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.