APA-čujuhus (7. p.)

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

Chicago-čujuhus (17. p.)

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

MLA-čujuhus (9. p.)

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

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