Bogue, D. J., & Nelson, J. (1971). The fertility components and contraceptive history techniques for measuring contraceptive use-effectiveness. Community and Family Study Center, University of Chicago.
Citazione stile Chigago Style (17a edizione)Bogue, Donald Joseph, e James Nelson. The Fertility Components and Contraceptive History Techniques for Measuring Contraceptive Use-effectiveness. Chicago: Community and Family Study Center, University of Chicago, 1971.
Citatione MLA (9a ed.)Bogue, Donald Joseph, e James Nelson. The Fertility Components and Contraceptive History Techniques for Measuring Contraceptive Use-effectiveness. Community and Family Study Center, University of Chicago, 1971.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.