Dyfyniad APA

Lee, P. N., & Wilson, M. J. (1976). Statistics of smoking in the United Kingdom (7th ed.). Tobacco Research Council.

Dyfyniad Arddull Chicago

Lee, P. N., and M. J. Wilson. Statistics of Smoking in the United Kingdom. 7th ed. London: Tobacco Research Council, 1976.

Dyfyniad MLA

Lee, P. N., and M. J. Wilson. Statistics of Smoking in the United Kingdom. 7th ed. Tobacco Research Council, 1976.

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