APA (7th ed.) Citation

Kline, W., & Thomas, L. (1986). G.P. potential: Teacher's guide. [Sigma]RM.

Chicago Style (17th ed.) Citation

Kline, Wynne, and Lynette Thomas. G.P. Potential: Teacher's Guide. Singapore: [Sigma]RM, 1986.

MLA (9th ed.) Citation

Kline, Wynne, and Lynette Thomas. G.P. Potential: Teacher's Guide. [Sigma]RM, 1986.