Busby, J. (2005). Drawing birds (2nd ed.). Timber Press.
Cita Chicago Style (17a ed.)Busby, John. Drawing Birds. 2nd ed. Portland, Or.: Timber Press, 2005.
Cita MLA (8a ed.)Busby, John. Drawing Birds. 2nd ed. Timber Press, 2005.
Precaución: Estas citas no son 100% exactas.