Horblit, M. (1947). Plane geometry problems. Barnes & Noble.
Chicago-čujuhus (17. p.)Horblit, M. Plane Geometry Problems. New York: Barnes & Noble, 1947.
MLA-čujuhus (9. p.)Horblit, M. Plane Geometry Problems. Barnes & Noble, 1947.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.