Παραπομπή APA

Khanna, B. S. a. . e. a. (2010). Practical Costing.

Παραπομπή Chicago Style

Khanna, B S and et al. Practical Costing. S Chand & Co. Pvt. Ltd., New Delhi, 2010.

Παραπομπή MLA

Khanna, B S and et al. Practical Costing. 2010.