Bull, R. J. (1984). Accounting in Business (Fifth Edition). ELSEVIER.
Lua i Stíl Chicago (17ú heag.)Bull, R. J. Accounting in Business (Fifth Edition). ELSEVIER, 1984.
Lua MLA (8ú heag.)Bull, R. J. Accounting in Business (Fifth Edition). ELSEVIER, 1984.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.