Keng, H., & Keng, R. L. (1990). The concise flora of Singapore: Gymnosperms and dicotyledons. Singapore University Press, National University of Singapore.
Chicago Style (17th ed.) CitationKeng, Hsuan, and Ro-Siu Ling Keng. The Concise Flora of Singapore: Gymnosperms and Dicotyledons. Singapore: Singapore University Press, National University of Singapore, 1990.
MLA (8th ed.) CitationKeng, Hsuan, and Ro-Siu Ling Keng. The Concise Flora of Singapore: Gymnosperms and Dicotyledons. Singapore University Press, National University of Singapore, 1990.
Warning: These citations may not always be 100% accurate.