APA (7th ed.) Citation

Bettinger, A. K., Hutchison, G. A., & Englund, J. A. (1966). A modern approach to algebra and trigonometry. International Textbook Co.

Chicago Style (17th ed.) Citation

Bettinger, Alvin K., Gerald A. Hutchison, and John A. Englund. A Modern Approach to Algebra and Trigonometry. Scranton: International Textbook Co, 1966.

MLA (9th ed.) Citation

Bettinger, Alvin K., et al. A Modern Approach to Algebra and Trigonometry. International Textbook Co, 1966.