Batty, J. (1973). Standard costing.: 3rd ed. Macdonald and Evans.
Lua i Stíl Chicago (17ú heag.)Batty, J. Standard Costing.: 3rd Ed. London: Macdonald and Evans, 1973.
Lua MLA (9ú heag.)Batty, J. Standard Costing.: 3rd Ed. Macdonald and Evans, 1973.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.