London, J., & Bullard, N. (2008). The call of the wild (abridged version) (Simplified edition.). Oxford University Press.
Citazione stile Chigago Style (17a edizione)London, Jack, e Nick Bullard. The Call of the Wild (abridged Version). Simplified edition. New York: Oxford University Press, 2008.
Citatione MLA (9a ed.)London, Jack, e Nick Bullard. The Call of the Wild (abridged Version). Simplified edition. Oxford University Press, 2008.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.