APA (7th ed.) Citation

Eller, W., & Hester, K. B. (1980). Circles and squares. Laidlaw Brothers.

Chicago Style (17th ed.) Citation

Eller, William, and Kathleen B. Hester. Circles and Squares. River Forest, Illinois: Laidlaw Brothers, 1980.

MLA (9th ed.) Citation

Eller, William, and Kathleen B. Hester. Circles and Squares. Laidlaw Brothers, 1980.