Gamble, K. C., Moyse, J. A., Lovstad, J. N., Ober, C. B., & Thompson, E. E. (2010). Blood Groups in the Species Survival Plan(®), European Endangered Species Program, and Managed in situ Populations of Bonobo (Pan paniscus), Common Chimpanzee (Pan troglodytes), Gorilla (Gorilla ssp.), and Orangutan (Pongo pygmaeus ssp.). Zoo Biol.

Gamble, Kathryn C., Jill A. Moyse, Jessica N. Lovstad, Carole B. Ober, und Emma E. Thompson. "Blood Groups in the Species Survival Plan(®), European Endangered Species Program, and Managed in Situ Populations of Bonobo (Pan Paniscus), Common Chimpanzee (Pan Troglodytes), Gorilla (Gorilla Ssp.), and Orangutan (Pongo Pygmaeus Ssp.)." Zoo Biol 2010.

Gamble, Kathryn C., et al. "Blood Groups in the Species Survival Plan(®), European Endangered Species Program, and Managed in Situ Populations of Bonobo (Pan Paniscus), Common Chimpanzee (Pan Troglodytes), Gorilla (Gorilla Ssp.), and Orangutan (Pongo Pygmaeus Ssp.)." Zoo Biol 2010.