Newman, V. (1993). Vitamin A and breastfeeding: A comparison of data from developed and developing countries. Wellstart Int'l.
Chicago-viite (17. p.)Newman, Vicky. Vitamin A and Breastfeeding: A Comparison of Data from Developed and Developing Countries. San Diego: Wellstart Int'l, 1993.
MLA-viite (9. p.)Newman, Vicky. Vitamin A and Breastfeeding: A Comparison of Data from Developed and Developing Countries. Wellstart Int'l, 1993.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.