APA-ийн эшлэл(7 дахь хэвлэлт)

Callenbach, E. (2008). Ecology: A pocket guide (Rev. ed., 10th anniversary ed.). University of California Press.

Чикаго-гийн эшлэл (17 дахь хэвлэлт)

Callenbach, Ernest. Ecology: A Pocket Guide. Rev. ed., 10th anniversary ed. Berkeley: University of California Press, 2008.

MLA -ийн эшлэл (9 дэх хэвлэлт)

Callenbach, Ernest. Ecology: A Pocket Guide. Rev. ed., 10th anniversary ed. University of California Press, 2008.