Gaya APA

Najafi, M., Gokhale, S. (2004). Trenchless Technology : pipeline and utility design, construction, and renewal . Toronto: McGraw-Hill.

Gaya MLA

Najafi, Mohammad., Gokhale, Sanjiv. "Trenchless Technology : pipeline and utility design, construction, and renewal". Toronto: McGraw-Hill, 2004. Text.