Dyfyniad APA
ebrary, Inc, Herrmann, W., & Obeid, R. (2011). Vitamins in the prevention of human diseases. Walter de Gruyter.
Dyfyniad Arddull Chicago
ebrary, Inc, Wolfgang Herrmann, and Rima Obeid. Vitamins in the Prevention of Human Diseases. Berlin: Walter de Gruyter, 2011.
Dyfyniad MLA
ebrary, Inc, et al. Vitamins in the Prevention of Human Diseases. Walter de Gruyter, 2011.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.