Hey, . K., & Sheldrake, . J. (1997). Urban transport. Ashgate.
Chicago-čujuhus (17. p.)Hey, Keving, juo John Sheldrake. Urban Transport. Aldershot: Ashgate, 1997.
MLA-čujuhus (9. p.)Hey, Keving, juo John Sheldrake. Urban Transport. Ashgate, 1997.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.