Heineman, E. R. (1950). Plane trigonometry with tables. McGraw-Hill.
Chicago-čujuhus (17. p.)Heineman, E. Richard. Plane Trigonometry with Tables. New York: McGraw-Hill, 1950.
MLA-čujuhus (9. p.)Heineman, E. Richard. Plane Trigonometry with Tables. McGraw-Hill, 1950.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.