Cita APA

Bettinger, A. K., Englund, J. A., & Hutchison, G. A. (1968). A modern approach to algebra and trignometry. American: International Textbook company.

Chicago Style Citation

Bettinger, Alvin K., John A. Englund, i Gerald A. Hutchison. A Modern Approach to Algebra and Trignometry. American: International Textbook company, 1968.

Cita MLA

Bettinger, Alvin K., John A. Englund, i Gerald A. Hutchison. A Modern Approach to Algebra and Trignometry. American: International Textbook company, 1968.