Dyfyniad APA

Levy, M. R., Dignan, M. B., & Shirreffs, J. H. (1992). Targeting wellness: The core. McGraw-Hill.

Dyfyniad Arddull Chicago

Levy, Marvin R., Mark B. Dignan, and Janet H. Shirreffs. Targeting Wellness: The Core. New York: McGraw-Hill, 1992.

Dyfyniad MLA

Levy, Marvin R., et al. Targeting Wellness: The Core. McGraw-Hill, 1992.

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