Research Conference on Natural Family Planning Warrenton, Va., Human Life Foundation, Center for Population Research (National Institute of Child Health and Human Development), Uricchio, W. A., & Williams, M. K. (1973). Proceedings of a Research Conference on Natural Family Planning: Edited by William A. Uricchio. Human Life Foundation.
Cita Chicago (17th ed.)Research Conference on Natural Family Planning Warrenton, Va., Human Life Foundation, Center for Population Research (National Institute of Child Health and Human Development), William A. Uricchio, i Mary Kay Williams. Proceedings of a Research Conference on Natural Family Planning: Edited by William A. Uricchio. Washington: Human Life Foundation, 1973.
Cita MLA (9th ed.)Research Conference on Natural Family Planning Warrenton, Va., et al. Proceedings of a Research Conference on Natural Family Planning: Edited by William A. Uricchio. Human Life Foundation, 1973.