Dyfyniad APA

International Congress Symposium on Cannabis & Harvey, D. (1985). Marihuana84: Proceedings/ Ninth International Congress Symposium on Cannabis, held at Helsinki in 1975. IRL Press.

Dyfyniad Arddull Chicago

International Congress Symposium on Cannabis and D.J Harvey. Marihuana84: Proceedings/ Ninth International Congress Symposium on Cannabis, Held at Helsinki in 1975. Oxford: IRL Press, 1985.

Dyfyniad MLA

International Congress Symposium on Cannabis and D.J Harvey. Marihuana84: Proceedings/ Ninth International Congress Symposium on Cannabis, Held at Helsinki in 1975. IRL Press, 1985.

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