APA

Kennedy M., Valle C. A. & Spencer H. G. (2009). The phylogenetic position of the Galápagos Cormorant. [S.d.]: [s.d.].

Chicago

Kennedy Martyn, Valle Carlos A and Spencer Hamish G. 2009. The phylogenetic position of the Galápagos Cormorant. [S.d.]: [s.d.].

Harvard

Kennedy M., Valle C. A. and Spencer H. G. (2009). The phylogenetic position of the Galápagos Cormorant. [S.d.]: [s.d.].

MLA

Kennedy Martyn, Valle Carlos A and Spencer Hamish G. The phylogenetic position of the Galápagos Cormorant. [S.d.]: [s.d.]. 2009.