Khanna. P.N. (1999). Indian practical civil engineer's handbook (17th ed.). Engineers' Publishers.
Chicago-stil citatKhanna. P.N. Indian Practical Civil Engineer's Handbook. 17th ed. New Delhi: Engineers' Publishers, 1999.
MLA-referensKhanna. P.N. Indian Practical Civil Engineer's Handbook. 17th ed. Engineers' Publishers, 1999.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.