APA (7e ed.) Bronvermelding
Krutch, J. W., & Landacre, P. (2009). The great chain of life (1st University of Iowa Press ed.). University of Iowa Press.
Chicago (17e ed.) Bronvermelding
Krutch, Joseph Wood, en Paul Landacre. The Great Chain of Life. 1st University of Iowa Press ed. Iowa City: University of Iowa Press, 2009.
MLA (9e ed.) Bronvermelding
Krutch, Joseph Wood, en Paul Landacre. The Great Chain of Life. 1st University of Iowa Press ed. University of Iowa Press, 2009.
Let op: Deze citaties zijn niet altijd 100% accuraat.