Suradi, R., Jatiputra, S., Tan, A., Wiknjosastro, G. and Tarigan, L. 1999. Effect of lactation management training on feeding pattern from birth to 6 months of age. Paediatrica Indonesiana. 39, 5-6 (Jun. 1999), 117-26. DOI:https://doi.org/10.14238/pi39.5-6.1999.117-26.