Wilson, R., Vargas, F. H., Steinfurth, A., Riordan, P., Ropert-Coudert, Y., & Macdonald, D. W. (2008). What grounds some birds for life? Movement and diving in the sexually dimorphic Galapagos cormorant. Ecological Monographs, 78(4), pp. 633-652. doi:10.1890/07-0677.1

Wilson, Rory, F. Hernán Vargas, Antje Steinfurth, Philip Riordan, Yan Ropert-Coudert, and David W. Macdonald. "What Grounds Some Birds for Life? Movement and Diving in the Sexually Dimorphic Galapagos Cormorant." Ecological Monographs 78, no. 4 (2008): 633-652.

Wilson, Rory, et al. "What Grounds Some Birds for Life? Movement and Diving in the Sexually Dimorphic Galapagos Cormorant." Ecological Monographs 78.4 (2008): 633-652.