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Hofmeyr, George Justus, Thozeka Mancotywa, Nomvula Silwana-Kwadjo, Batembu Mgudlwa, Theresa A. Lawrie, e Ahmet Metin Gülmezoglu. "Audit of a New Model of Birth Care for Women With Low Risk Pregnancies in South Africa: The Primary Care Onsite Midwife-led Birth Unit (OMBU)." BMC Pregnancy Childbirth 2014.

Hofmeyr, George Justus, et al. "Audit of a New Model of Birth Care for Women With Low Risk Pregnancies in South Africa: The Primary Care Onsite Midwife-led Birth Unit (OMBU)." BMC Pregnancy Childbirth 2014.