APA
Khanna B. S. &. o., . (1988). Practical costing. New Delhi: S Chand.
Chicago
Khanna B S & others, . 1988. Practical costing. New Delhi: S Chand.
Harvard
Khanna B. S. &. o., . (1988). Practical costing. New Delhi: S Chand.
MLA
Khanna B S & others, . Practical costing. New Delhi: S Chand. 1988.