(1987). Structural engineering: Loads.
Chicago-čujuhus (17. p.)Structural Engineering: Loads. 1987.
MLA-čujuhus (9. p.)Structural Engineering: Loads. 1987.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.
APA-čujuhus (7. p.)