Zablan, Z. C. (1985). Institutional report on the qualitative aspects of natural family planning practice among couples of Luzon. The Demographic Research and Development Foundation (DRDF), Inc.
Citace podle Chicago (17th ed.)Zablan, Zelda C. Institutional Report on the Qualitative Aspects of Natural Family Planning Practice Among Couples of Luzon. Philippines: The Demographic Research and Development Foundation (DRDF), Inc, 1985.
Citace podle MLA (9th ed.)Zablan, Zelda C. Institutional Report on the Qualitative Aspects of Natural Family Planning Practice Among Couples of Luzon. The Demographic Research and Development Foundation (DRDF), Inc, 1985.
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