Byron, M. J., D. R. Suhadi, L. M. Hepp, E. Avila-Tang, J. Yang, G. Asiani, R. Rubaeah, S. A. Tamplin, T. S. Bam, and J. E. Cohen. “Secondhand Tobacco Smoke in Public Venues in Three Indonesian Cities”. Medical Journal of Indonesia, Vol. 22, no. 4, Dec. 2013, pp. 232-7, doi:10.13181/mji.v22i4.606.