Cita APA

Grant, P. R., & Grant, B. R. (1997). Genetics and the origin of bird species. The National Academy of Sciences of the USA.

Chicago Style Citation

Grant, Peter R., i B. Rosemary Grant. Genetics and the Origin of Bird species. The National Academy of Sciences of the USA, 1997.

Cita MLA

Grant, Peter R., i B. Rosemary Grant. Genetics and the Origin of Bird species. The National Academy of Sciences of the USA, 1997.