APA (7 वां संस्करण) प्रशस्ति पत्र
De Vries, R. G. (2004). A pleasing birth: Midwives and maternity care in the Netherlands. Temple University Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र
De Vries, Raymond G. A Pleasing Birth: Midwives and Maternity Care in the Netherlands. Philadelphia: Temple University Press, 2004.
एमएलए (9वां संस्करण) प्रशस्ति पत्र
De Vries, Raymond G. A Pleasing Birth: Midwives and Maternity Care in the Netherlands. Temple University Press, 2004.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.