APA-ийн эшлэл(7 дахь хэвлэлт)

Chua, C. F. T., Wee, D. S. H., Lim, R. Y. T., & Quah Teong Ewe, E. (2019). Economic valuation of heritage sites in Singapore: A contingent valuation method.

Чикаго-гийн эшлэл (17 дахь хэвлэлт)

Chua, Celine Fang Ting, Douglas Sheng Hui Wee, Rachel Yan Ting Lim, ба Euston Quah Teong Ewe. Economic Valuation of Heritage Sites in Singapore: A Contingent Valuation Method. 2019.

MLA -ийн эшлэл (9 дэх хэвлэлт)

Chua, Celine Fang Ting, et al. Economic Valuation of Heritage Sites in Singapore: A Contingent Valuation Method. 2019.