Khan และผู้แต่งคนอื่นๆ. 1998. Factors associated with smoking status among construction workers in Salaya Nakhonphathom province, Thailand. Faculty of Graduate Studies, Mahidol University;
Khan และผู้แต่งคนอื่นๆ. (1998) Factors associated with smoking status among construction workers in Salaya Nakhonphathom province, Thailand . Mahidol University/Bangkok.
Khan และผู้แต่งคนอื่นๆ. Factors associated with smoking status among construction workers in Salaya Nakhonphathom province, Thailand. . Bangkok:Mahidol University, 1998.
Khan และผู้แต่งคนอื่นๆ. (1998) Factors associated with smoking status among construction workers in Salaya Nakhonphathom province, Thailand . Mahidol University/Bangkok.