Sumruay Yotawichit. 1988. Parental practice of parental role responsibilies in child care and child rearing. Faculty of Graduate Studies, Mahidol University;
Sumruay Yotawichit. (1988) Parental practice of parental role responsibilies in child care and child rearing . Mahidol University/Bangkok.
Sumruay Yotawichit. Parental practice of parental role responsibilies in child care and child rearing. . Bangkok:Mahidol University, 1988.
Sumruay Yotawichit. (1988) Parental practice of parental role responsibilies in child care and child rearing . Mahidol University/Bangkok.