Vitor, S. A. (1988). The billings method of family planning: Its effects on marital relations and on the upbringing and education of children as perceived by enriched couples in the province of Bohol.
Chicago Style (17th ed.) CitationVitor, Sufracia Arboladura. The Billings Method of Family Planning: Its Effects on Marital Relations and on the Upbringing and Education of Children as Perceived by Enriched Couples in the Province of Bohol. 1988.
MLA (9th ed.) CitationVitor, Sufracia Arboladura. The Billings Method of Family Planning: Its Effects on Marital Relations and on the Upbringing and Education of Children as Perceived by Enriched Couples in the Province of Bohol. 1988.
Warning: These citations may not always be 100% accurate.