APA Style

Jones, HL, Jones, RP, Tan, KL. (1999). Groundwork of Commerce 1 (First). Singapore: Federal Publications.

Chicago Style

Jones, HL, Jones, RP, Tan, KL. Groundwork of Commerce 1. First Singapore: Federal Publications, 1999. printed.

MLA Style

Jones, HL, Jones, RP, Tan, KL. Groundwork of Commerce 1. First Singapore: Federal Publications, 1999. printed.

Turabian Style

Jones, HL, Jones, RP, Tan, KL. Groundwork of Commerce 1. First Singapore: Federal Publications, 1999. printed.