World Health Organization. Regional Office for Europe & Michaelsen, K. F. (2000). Feeding and nutrition of infants and young children: Guidelines for the WHO European Region, with emphasis on the former Soviet countries. WHO Regional Office for Europe.
Παραπομπή σε μορφή Chicago (17η εκδ.)World Health Organization. Regional Office for Europe και Kim Fleischer Michaelsen. Feeding and Nutrition of Infants and Young Children: Guidelines for the WHO European Region, with Emphasis on the Former Soviet Countries. Copenhagen: WHO Regional Office for Europe, 2000.
Παραπομπή σε μορφή MLA (9th εκδ.)World Health Organization. Regional Office for Europe και Kim Fleischer Michaelsen. Feeding and Nutrition of Infants and Young Children: Guidelines for the WHO European Region, with Emphasis on the Former Soviet Countries. WHO Regional Office for Europe, 2000.