APA (7th ed.) Citation

Curtis, C. W., Daus, P. H., & Walker, R. J. (1961). Euclidean geometry based on ruler and protactor axioms (2nd rev. ed.). SMSG.

Chicago Style (17th ed.) Citation

Curtis, Charles W., Paul H. Daus, and Robert J. Walker. Euclidean Geometry Based on Ruler and Protactor Axioms. 2nd rev. ed. [New Haven]: SMSG, 1961.

MLA (9th ed.) Citation

Curtis, Charles W., et al. Euclidean Geometry Based on Ruler and Protactor Axioms. 2nd rev. ed. SMSG, 1961.