APA (7th ed.) Citation

Wong, P. P. (1968). Some aspects of the surface configuration of Singapore island.

Chicago Style (17th ed.) Citation

Wong, Poh Poh. Some Aspects of the Surface Configuration of Singapore Island. 1968.

MLA (8th ed.) Citation

Wong, Poh Poh. Some Aspects of the Surface Configuration of Singapore Island. 1968.

Warning: These citations may not always be 100% accurate.