Cita APA

Billings, E., & Westmore, A. (2007). Metode Ovulasi Billing. Cara Mengatur Kesuburan. KPG.

Citación estilo Chicago

Billings, Evelyn, and Ann Westmore. Metode Ovulasi Billing. Cara Mengatur Kesuburan. KPG, 2007.

Cita MLA

Billings, Evelyn, and Ann Westmore. Metode Ovulasi Billing. Cara Mengatur Kesuburan. KPG, 2007.

Warning: These citations may not always be 100% accurate.