Bicudo, J. E. P. W. Ecological and environmental physiology of birds. Oxford University Press.
Chicago-referens (17:e uppl.)Bicudo, J. Eduardo P. W. Ecological and Environmental Physiology of Birds. Oxford University Press.
MLA-referens (8:e uppl.)Bicudo, J. Eduardo P. W. Ecological and Environmental Physiology of Birds. Oxford University Press.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.