Alba, J. R. (1991). Natural birth control for avoiding or achieving pregnancy: The dry or wet method (2nd ed.). Alba Natural Family Planning Organization.
Citace podle Chicago (17th ed.)Alba, Jose R. Natural Birth Control for Avoiding or Achieving Pregnancy: The Dry or Wet Method. 2nd ed. Makati, Metro Manila: Alba Natural Family Planning Organization, 1991.
Citace podle MLA (9th ed.)Alba, Jose R. Natural Birth Control for Avoiding or Achieving Pregnancy: The Dry or Wet Method. 2nd ed. Alba Natural Family Planning Organization, 1991.
Upozornění: Tyto citace jsou generovány automaticky. Nemusí být zcela správně podle citačních pravidel..