Billings, E. 6 Enam Pelajaran Praktis Menuju Persalinan Mudah. Yayayan Essensia Med.
Chicago Style (17th ed.) CitationBillings, E. 6 Enam Pelajaran Praktis Menuju Persalinan Mudah. Yayayan Essensia Med.
MLA (8th ed.) CitationBillings, E. 6 Enam Pelajaran Praktis Menuju Persalinan Mudah. Yayayan Essensia Med.
Warning: These citations may not always be 100% accurate.