Dyfyniad APA
Rostal, D. C., McCoy, E. D., & Mushinsky, H. R. (2014). Biology and conservation of North American tortoises. Johns Hopkins University Press.
Dyfyniad Arddull Chicago
Rostal, David C., Earl D. McCoy, and Henry R. Mushinsky. Biology and Conservation of North American Tortoises. Baltimore, Maryland: Johns Hopkins University Press, 2014.
Dyfyniad MLA
Rostal, David C., et al. Biology and Conservation of North American Tortoises. Johns Hopkins University Press, 2014.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.