Citace podle APA (7th ed.)
Krutch, J. W., & Landacre, P. (2009). The great chain of life (1st University of Iowa Press ed.). University of Iowa Press.
Citace podle Chicago (17th ed.)
Krutch, Joseph Wood, a Paul Landacre. The Great Chain of Life. 1st University of Iowa Press ed. Iowa City: University of Iowa Press, 2009.
Citace podle MLA (9th ed.)
Krutch, Joseph Wood, a Paul Landacre. The Great Chain of Life. 1st University of Iowa Press ed. University of Iowa Press, 2009.
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