APA (7th ed.) Citation

Young, G. C., & Young, W. H. (1970). Beginner's book of geometry. Chelsea Pub. Co..

Chicago Style (17th ed.) Citation

Young, Grace Chisholm, and W. H. Young. Beginner's Book of Geometry. Bronx, N.Y.: Chelsea Pub. Co., 1970.

MLA (9th ed.) Citation

Young, Grace Chisholm, and W. H. Young. Beginner's Book of Geometry. Chelsea Pub. Co., 1970.