Dyfyniad APA
ebrary, Inc, Liverman, C. T., Fulco, C., & Kipen, H. M. (1998). Internet access to the National Library of Medicine's toxicology and environmental health databases. National Academy Press.
Dyfyniad Arddull Chicago
ebrary, Inc, Catharyn T. Liverman, Carolyn Fulco, and Howard M. Kipen. Internet Access to the National Library of Medicine's Toxicology and Environmental Health Databases. Washington, D.C.: National Academy Press, 1998.
Dyfyniad MLA
ebrary, Inc, et al. Internet Access to the National Library of Medicine's Toxicology and Environmental Health Databases. National Academy Press, 1998.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.