Citazione Stile APA (7a Edizione)
Krutch, J. W., & Landacre, P. (2009). The great chain of life (1st University of Iowa Press ed.). University of Iowa Press.
Citazione stile Chigago Style (17a edizione)
Krutch, Joseph Wood, e Paul Landacre. The Great Chain of Life. 1st University of Iowa Press ed. Iowa City: University of Iowa Press, 2009.
Citatione MLA (9a ed.)
Krutch, Joseph Wood, e Paul Landacre. The Great Chain of Life. 1st University of Iowa Press ed. University of Iowa Press, 2009.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.