Kang, K. W. (1973). A study on the interrelationships between lactation and postpartum amenorrhea. Korean Institute for Family Planning.
Lua i Stíl Chicago (17ú heag.)Kang, Kil Won. A Study on the Interrelationships Between Lactation and Postpartum Amenorrhea. Seoul: Korean Institute for Family Planning, 1973.
Lua MLA (9ú heag.)Kang, Kil Won. A Study on the Interrelationships Between Lactation and Postpartum Amenorrhea. Korean Institute for Family Planning, 1973.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.