APA (7th ed.) Citation

Heng, H. T. T. (1991). The rice trade in Singapore.

Chicago Style (17th ed.) Citation

Heng, Helen Tai Tze. The Rice Trade in Singapore. 1991.

MLA (8th ed.) Citation

Heng, Helen Tai Tze. The Rice Trade in Singapore. 1991.

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