APA
Khanna S. K. &. O., .Highway Engineering. : Nemchand& Bros Roorle.
Chicago
Khanna S K & Others, .Highway Engineering. : Nemchand& Bros Roorle.
Harvard
Khanna S. K. &. O., .Highway Engineering. : Nemchand& Bros Roorle.
MLA
Khanna S K & Others, .: Nemchand& Bros Roorle. .