• [Wiki] http://en.wikipedia.org/wiki/Psophia_crepitans.
• [HornHutc1988] Horning, C. L., Hutchins, M., and English, W. (1988). Breeding and management of the common trumpeter (Psophia crepitans). Zoo Biology, 6:139--160.
• [Kooy2010] Kooijman, S. (2010). Dynamic Energy Budget theory for metabolic organisation. Cambridge Univ. Press, Cambridge.
• [PrinPres1991] Prinzinger, R., A.Preßmar, and Schleucher, E. (1991). Body temperature in birds. Comp. Biochem. Physiol., 99A(4):499--506. doi:10.1016/0300-9629(91)90122-S.