Wattansupt, N., P. Isarabhakdi, V. Thongthai, J. B. Casterline, and S. A. Matthew. “Influences of Family Planning Services on Contraceptive Failure: Evidence from the Kanchanaburi Demographic Surveillance System”. Journal of Population and Social Studies [JPSS], vol. 17, no. 2, Jan. 2009, pp. 47-64, https://so03.tci-thaijo.org/index.php/jpss/article/view/84644.