1. 1） Ho, R., ‘Geography at the universities: Department of Geography, University of Malaya’ Oriental Geographer, 3, 1959, pp. 105–108.
2. 2） Voon, P. K., ‘Geography at Pantai Valley: the first thirty years in the University of Malaya’, （Voon, P. K., and Bahrin, T. S., eds., The View from Within: Geographical Essays on Malaysia and Southeast Asia, 1992）, pp. 3–34.
3. 3） Voon, op. cit., footnote 2.
4. 4） Voon. P. K. ‘Geography education in Malaysia’, Malaysian Journal of Tropical Geography, 21, 1990, pp. 97–112.
5. 5） Voon, op. cit., footnote 2.