Παραπομπή σε μορφή APA (7η εκδ.)

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

Παραπομπή σε μορφή Chicago (17η εκδ.)

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

Παραπομπή σε μορφή MLA (9th εκδ.)

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