Cita APA (7a ed.)

Guan, K. C. (2021). 1819 & Before: Singapore's Pasts. ISEAS - Yusof Ishak Institute.

Cita Chicago Style (17a ed.)

Guan, Kwa Chong. 1819 & Before: Singapore's Pasts. Singapore: ISEAS - Yusof Ishak Institute, 2021.

Cita MLA (8a ed.)

Guan, Kwa Chong. 1819 & Before: Singapore's Pasts. ISEAS - Yusof Ishak Institute, 2021.