APA (7th ed.) Citation

Chan, N. P. (1990). Useful economics. Vantage Systems.

Chicago Style (17th ed.) Citation

Chan, N. Patrick. Useful Economics. Ottawa: Vantage Systems, 1990.

MLA (9th ed.) Citation

Chan, N. Patrick. Useful Economics. Vantage Systems, 1990.

Warning: These citations may not always be 100% accurate.