Zaman และ Badi-uz. (1994) Knowledge, perception and self-care practice associating with URI and pneumonia or bronchitis in children under five years of age. Mahidol University,:ม.ป.ท.Zaman และ Badi-uz. 1994. Knowledge, perception and self-care practice associating with URI and pneumonia or bronchitis in children under five years of age. ม.ป.ท.:Mahidol University,;Zaman และ Badi-uz. Knowledge, perception and self-care practice associating with URI and pneumonia or bronchitis in children under five years of age. ม.ป.ท.:Mahidol University, 1994. Print.