APA (7th ed.) Citation

Zill, D. G. (1990). Trigonometry. McGraw-Hill.

Chicago Style (17th ed.) Citation

Zill, Dennis G. Trigonometry. McGraw-Hill, 1990.

MLA (8th ed.) Citation

Zill, Dennis G. Trigonometry. McGraw-Hill, 1990.

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