Dyfyniad APA
ebrary, Inc, Gallo, R., & Robinson, P. (2009). Environmental chemistry research progress. Nova Science Publishers.
Dyfyniad Arddull Chicago
ebrary, Inc, Richard Gallo, and Paul Robinson. Environmental Chemistry Research Progress. New York: Nova Science Publishers, 2009.
Dyfyniad MLA
ebrary, Inc, et al. Environmental Chemistry Research Progress. Nova Science Publishers, 2009.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.