APA (7th ed.) Citation

Schaaf, W. L. (1973). The high school mathematics library ([5th ed.].). National Council of Teachers of Mathematics.

Chicago Style (17th ed.) Citation

Schaaf, William Leonard. The High School Mathematics Library. [5th ed.]. Reston, VA: National Council of Teachers of Mathematics, 1973.

MLA (9th ed.) Citation

Schaaf, William Leonard. The High School Mathematics Library. [5th ed.]. National Council of Teachers of Mathematics, 1973.