APA-ийн эшлэл(7 дахь хэвлэлт)

Wright Richard T. (2011). Environmental science: Toward a sustainable future. PHI Learning.

Чикаго-гийн эшлэл (17 дахь хэвлэлт)

Wright Richard T. Environmental Science: Toward a Sustainable Future. New Delhi: PHI Learning, 2011.

MLA -ийн эшлэл (9 дэх хэвлэлт)

Wright Richard T. Environmental Science: Toward a Sustainable Future. PHI Learning, 2011.