Khanna, P. N. Practical Civil Engineers' Handbook (4th ed.).
Chicago-čujuhus (17. p.)Khanna, P. N. Practical Civil Engineers' Handbook. 4th ed.
MLA-čujuhus (9. p.)Khanna, P. N. Practical Civil Engineers' Handbook. 4th ed.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.