Md Aris, M. A. ., M. H. . Nik Mohamed, R. . Mohd Rus, N. A. . Jamani, and M. S. E. Shalihin. “Reliability and Construct Validity of Knowledge, Attitude and Practice of Medical Doctors on Smoking Cessation Guidelines”. IIUM Medical Journal Malaysia, vol. 15, no. 1, June 2016, doi:10.31436/imjm.v15i1.1197.