Simkin, P., & Cheyney, M. (2025). The birth partner: A complete guide to childbirth for dads, partners, doulas, and other labor companions (Sixth revised edition.). Harvard Common Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रSimkin, Penny, और Melissa Cheyney. The Birth Partner: A Complete Guide to Childbirth for Dads, Partners, Doulas, and Other Labor Companions. Sixth revised edition. Beverly, MA, USA: Harvard Common Press, 2025.
एमएलए (8वां संस्करण) प्रशस्ति पत्रSimkin, Penny, और Melissa Cheyney. The Birth Partner: A Complete Guide to Childbirth for Dads, Partners, Doulas, and Other Labor Companions. Sixth revised edition. Harvard Common Press, 2025.
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