APA (7e ed.) Bronvermelding

Howell, S. N. G., Patteson, J. B., & Shearwater, D. (2012). Petrels, albatrosses, and storm-petrels of North America: A photographic guide. Princeton University Press.

Chicago (17e ed.) Bronvermelding

Howell, Steve N. G., J. Brian Patteson, en Debra Shearwater. Petrels, Albatrosses, and Storm-petrels of North America: A Photographic Guide. Princeton: Princeton University Press, 2012.

MLA (9e ed.) Bronvermelding

Howell, Steve N. G., et al. Petrels, Albatrosses, and Storm-petrels of North America: A Photographic Guide. Princeton University Press, 2012.