Garcia, M. L. R. (1999). Natural family planning method. Kabayan.
Chicagoスタイル(17版)引用形式Garcia, Ma. Leonila R. "Natural Family Planning Method." Kabayan 1999.
MLA(9版)引用形式Garcia, Ma. Leonila R. "Natural Family Planning Method." Kabayan, 1999.
警告: この引用は必ずしも正確ではありません.