Dyfyniad APA

ebrary, Inc, De Leon, D. A., & Aragon, P. R. (2012). Trace elements: Environmental sources, geochemistry and human health. Nova Science Publishers.

Dyfyniad Arddull Chicago

ebrary, Inc, Diego Alejandro De Leon, and Paloma Raquel Aragon. Trace Elements: Environmental Sources, Geochemistry and Human Health. Hauppauge, N.Y.: Nova Science Publishers, 2012.

Dyfyniad MLA

ebrary, Inc, et al. Trace Elements: Environmental Sources, Geochemistry and Human Health. Nova Science Publishers, 2012.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.