APA-referens (7:e uppl.)
Mishra,P.K. Upkar's objective civil engineering: Railway & other engineering(diplima) competitive examinations. Upkar Prakashan.
Chicago-referens (17:e uppl.)
Mishra,P.K. Upkar's Objective Civil Engineering: Railway & Other Engineering(diplima) Competitive Examinations. Agra: Upkar Prakashan.
MLA-referens (9:e uppl.)
Mishra,P.K. Upkar's Objective Civil Engineering: Railway & Other Engineering(diplima) Competitive Examinations. Upkar Prakashan.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.