Howell, S. N. G., Patteson, J. B., & Shearwater, D. (2012). Petrels, albatrosses, and storm-petrels of North America: A photographic guide. Princeton University Press.
Dyfyniad Arddull ChicagoHowell, Steve N. G., J. Brian Patteson, and Debra Shearwater. Petrels, Albatrosses, and Storm-petrels of North America: A Photographic Guide. Princeton: Princeton University Press, 2012.
Dyfyniad MLAHowell, Steve N. G., et al. Petrels, Albatrosses, and Storm-petrels of North America: A Photographic Guide. Princeton University Press, 2012.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.