Dyfyniad APA

Research Conference on Natural Family Planning, W., Urichie, W. A., & Natural family planning. (1973). Proceedings. Human Life Foundations.

Dyfyniad Arddull Chicago

Research Conference on Natural Family Planning, Warrenton, William A. Urichie, and Natural family planning. Proceedings. Washington, D. C: Human Life Foundations, 1973.

Dyfyniad MLA

Research Conference on Natural Family Planning, Warrenton, et al. Proceedings. Human Life Foundations, 1973.

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