Dyfyniad APA

Spellman, F. R., & Stoudt, M. L. (2013). The handbook of environmental health. Scarecrow Press, Inc..

Dyfyniad Arddull Chicago

Spellman, Frank R., and Melissa L. Stoudt. The Handbook of Environmental Health. Lanham, Md.: Scarecrow Press, Inc., 2013.

Dyfyniad MLA

Spellman, Frank R., and Melissa L. Stoudt. The Handbook of Environmental Health. Scarecrow Press, Inc., 2013.

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