APA

Tonnis B., Grant P. R., Grant B. R. & Petren K. (2005). Habitat selection and ecological speciation in Galápagos warbler finches (Certhidea olivacea and Certhidea fusca). [S.d.]: [s.d.].

Chicago

Tonnis Brandon, Grant Peter R, Grant B Rosemary and Petren Kenneth. 2005. Habitat selection and ecological speciation in Galápagos warbler finches (Certhidea olivacea and Certhidea fusca). [S.d.]: [s.d.].

Harvard

Tonnis B., Grant P. R., Grant B. R. and Petren K. (2005). Habitat selection and ecological speciation in Galápagos warbler finches (Certhidea olivacea and Certhidea fusca). [S.d.]: [s.d.].

MLA

Tonnis Brandon, Grant Peter R, Grant B Rosemary and Petren Kenneth. Habitat selection and ecological speciation in Galápagos warbler finches (Certhidea olivacea and Certhidea fusca). [S.d.]: [s.d.]. 2005.