KHANNA B S. (1985). PRATICAL COSTING (3RD.). SULTAN CHAND AND SONS.
Lua i Stíl Chicago (17ú heag.)KHANNA B S. PRATICAL COSTING. 3RD. NEW DELHI: SULTAN CHAND AND SONS, 1985.
Lua MLA (9ú heag.)KHANNA B S. PRATICAL COSTING. 3RD. SULTAN CHAND AND SONS, 1985.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.