Cita APA (7th ed.)
Welchons, A. M., & Krickenberger, W. R. (1944). Solid Geometry (1a.ed.). By Ginn and Company.
Cita Chicago (17th ed.)
Welchons, A. M., i W. R. Krickenberger. Solid Geometry. 1a.ed. Washington: By Ginn and Company, 1944.
Cita MLA (9th ed.)
Welchons, A. M., i W. R. Krickenberger. Solid Geometry. 1a.ed. By Ginn and Company, 1944.
Atenció: Aquestes cites poden no estar 100% correctes.