APA-referens (7:e uppl.)

Singh, G., & Singh, J. (1993). Estimating costing and valuation. Standard Publishers Distributors.

Chicago-referens (17:e uppl.)

Singh, Gurcharan, och Jagdish Singh. Estimating Costing and Valuation. India: Standard Publishers Distributors, 1993.

MLA-referens (8:e uppl.)

Singh, Gurcharan, och Jagdish Singh. Estimating Costing and Valuation. Standard Publishers Distributors, 1993.