APA (7th ed.) Citation

Ong, A. C., & Gabriel, P. B. (2011). Elements of investment mathematics. Rex Book Store.

Chicago Style (17th ed.) Citation

Ong, Anita C., and Presentacion B. Gabriel. Elements of Investment Mathematics. Manila: Rex Book Store, 2011.

MLA (9th ed.) Citation

Ong, Anita C., and Presentacion B. Gabriel. Elements of Investment Mathematics. Rex Book Store, 2011.