Nguyen Thi My Hanh และ Naowarat Kanchankhan. (2012) Respiratory effects among non smoking women in relation to household cooking fuel uses: liquefied petroleum gas only, coal only and both liquefied petroleum gas and coal in Tu Liem Suburban District Hanoi Vietnam. Chulalongkorn University:ม.ป.ท.Nguyen Thi My Hanh และ Naowarat Kanchankhan. 2012. Respiratory effects among non smoking women in relation to household cooking fuel uses: liquefied petroleum gas only, coal only and both liquefied petroleum gas and coal in Tu Liem Suburban District Hanoi Vietnam. ม.ป.ท.:Chulalongkorn University;Nguyen Thi My Hanh และ Naowarat Kanchankhan. Respiratory effects among non smoking women in relation to household cooking fuel uses: liquefied petroleum gas only, coal only and both liquefied petroleum gas and coal in Tu Liem Suburban District Hanoi Vietnam. ม.ป.ท.:Chulalongkorn University, 2012. Print.