Dyfyniad APA
ebrary, Inc, Smith, H. S., & Passik, S. D. (2008). Pain and chemical dependency. Oxford University Press.
Dyfyniad Arddull Chicago
ebrary, Inc, Howard S. Smith, and Steven D. Passik. Pain and Chemical Dependency. New York: Oxford University Press, 2008.
Dyfyniad MLA
ebrary, Inc, et al. Pain and Chemical Dependency. Oxford University Press, 2008.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.