Dyfyniad APA
ebrary, Inc, & Clark, E. L. (2011). Cannabis sativa for health and hemp. Nova Science Publisher.
Dyfyniad Arddull Chicago
ebrary, Inc, and Ethan L. Clark. Cannabis Sativa for Health and Hemp. Hauppauge, N.Y.: Nova Science Publisher, 2011.
Dyfyniad MLA
ebrary, Inc, and Ethan L. Clark. Cannabis Sativa for Health and Hemp. Nova Science Publisher, 2011.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.