Research Conference on Natural Family Planning, W., Urichie, W. A., & Natural family planning. (1973). Proceedings. Human Life Foundations.
Цитирование в стиле Чикаго (17-е изд.)Research Conference on Natural Family Planning, Warrenton, William A. Urichie, и Natural family planning. Proceedings. Washington, D. C: Human Life Foundations, 1973.
Цитирование MLA (9-е изд.)Research Conference on Natural Family Planning, Warrenton, et al. Proceedings. Human Life Foundations, 1973.
Предупреждение: эти цитированмия не могут быть всегда правильны на 100%.