Boer, G. B. (1974). Direct cost and contribution accounting: An integrated management accounting system. Wiley.
Lua i Stíl Chicago (17ú heag.)Boer, Germain B. Direct Cost and Contribution Accounting: An Integrated Management Accounting System. New York: Wiley, 1974.
Lua MLA (8ú heag.)Boer, Germain B. Direct Cost and Contribution Accounting: An Integrated Management Accounting System. Wiley, 1974.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.