HOLTZ, R. D., & KOVACS, W. D. (1981). An introduction to geotechnical engineering. Prentice-hall.
Chicago-čujuhus (17. p.)HOLTZ, Robert D., juo William D. KOVACS. An Introduction to Geotechnical Engineering. New Jersey: Prentice-hall, 1981.
MLA-čujuhus (9. p.)HOLTZ, Robert D., juo William D. KOVACS. An Introduction to Geotechnical Engineering. Prentice-hall, 1981.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.