APA (7th ed.) Citation

Johnson, R. A., & Young, J. W. (1929). Modern geometry: An elementary treatise on the geometry of the triangle and the circle. Mifflin.

Chicago Style (17th ed.) Citation

Johnson, Roger A., and John Wesley Young. Modern Geometry: An Elementary Treatise on the Geometry of the Triangle and the Circle. Boston [u.a.]: Mifflin, 1929.

MLA (9th ed.) Citation

Johnson, Roger A., and John Wesley Young. Modern Geometry: An Elementary Treatise on the Geometry of the Triangle and the Circle. Mifflin, 1929.