Dyfyniad APA

(1990). Smoking, Tobacco, nd cancer program: 1985-1989 status report. [Washington]: US. Department of Health and Human Services.

Dyfyniad Arddull Chicago

Smoking, Tobacco, Nd Cancer Program: 1985-1989 Status Report. [Washington]: US. Department of Health and Human Services, 1990.

Dyfyniad MLA

Smoking, Tobacco, Nd Cancer Program: 1985-1989 Status Report. [Washington]: US. Department of Health and Human Services, 1990.

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