APA (7th ed.) Citation

Gibson, J. (2008). Trigonometry tutor. TMW Media Group.

Chicago Style (17th ed.) Citation

Gibson, Jason. Trigonometry Tutor. Venice, CA: TMW Media Group, 2008.

MLA (9th ed.) Citation

Gibson, Jason. Trigonometry Tutor. TMW Media Group, 2008.

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