APA (7th ed.) Citation

Kenna, L. A. (1962). Understanding mathematics with visual aids. Littlefield, Adams and Co.

Chicago Style (17th ed.) Citation

Kenna, L. A. Understanding Mathematics with Visual Aids. New Jersey: Littlefield, Adams and Co, 1962.

MLA (9th ed.) Citation

Kenna, L. A. Understanding Mathematics with Visual Aids. Littlefield, Adams and Co, 1962.

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