C.K.G. Pillay, S. d/o. “Estoppel And Substantive Legitimate Expectation: Parallel Doctrines In Public Law?”. Journal of Malaysian and Comparative Law, vol. 26, no. 2. Dec, Dec. 1999, pp. 171-94, https://ejournal.um.edu.my/index.php/JMCL/article/view/16177.