APA-ийн эшлэл(7 дахь хэвлэлт)

Cunningham, W. P., & Cunningham , M. A. (2004). Principles of environmental science : inquiry and: Applications (2nd ed.). McGraw-Hill.

Чикаго-гийн эшлэл (17 дахь хэвлэлт)

Cunningham, William P., ба Mary Ann Cunningham. Principles of Environmental Science : Inquiry and: Applications. 2nd ed. Boston: McGraw-Hill, 2004.

MLA -ийн эшлэл (9 дэх хэвлэлт)

Cunningham, William P., ба Mary Ann Cunningham. Principles of Environmental Science : Inquiry and: Applications. 2nd ed. McGraw-Hill, 2004.