APA (7th ed.) Citation

Donovan, G. S., & Gimmestad, B. B. (1980). Trigonometry with calculators. Prindle, Weber & Schmidt.

Chicago Style (17th ed.) Citation

Donovan, George S., and Beverly Beyreuther Gimmestad. Trigonometry with Calculators. Boston, Mass.: Prindle, Weber & Schmidt, 1980.

MLA (9th ed.) Citation

Donovan, George S., and Beverly Beyreuther Gimmestad. Trigonometry with Calculators. Prindle, Weber & Schmidt, 1980.