APA citiranje
Kooyman, G. L., & Lynch, W. (2013). Penguins: The animal answer guide. The Johns Hopkins University Press.
Chicago Style (17th ed.) Citation
Kooyman, Gerald L., and Wayne Lynch. Penguins: The Animal Answer Guide. Baltimore: The Johns Hopkins University Press, 2013.
MLA citiranje
Kooyman, Gerald L., and Wayne Lynch. Penguins: The Animal Answer Guide. The Johns Hopkins University Press, 2013.
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