Dyfyniad APA
ebrary, Inc, Gerstein, D. R., & Harwood, H. J. (1990). A study of the evolution, effectiveness, and financing of public and private drug treatment systems. National Academy Press.
Dyfyniad Arddull Chicago
ebrary, Inc, Dean R. Gerstein, and Henrick J. Harwood. A Study of the Evolution, Effectiveness, and Financing of Public and Private Drug Treatment Systems. Washington, D.C.: National Academy Press, 1990.
Dyfyniad MLA
ebrary, Inc, et al. A Study of the Evolution, Effectiveness, and Financing of Public and Private Drug Treatment Systems. National Academy Press, 1990.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.