Dyfyniad APA

Wright, J. D., & Pearl, L. (1981). Knowledge and experience of young people regarding drug abuse between 1969 and 1979.

Dyfyniad Arddull Chicago

Wright, J D., and L. Pearl. Knowledge and Experience of Young People Regarding Drug Abuse between 1969 and 1979. 1981.

Dyfyniad MLA

Wright, J D., and L. Pearl. Knowledge and Experience of Young People Regarding Drug Abuse between 1969 and 1979. 1981.

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