Sawyer, L. B. (2009). Sawyer's internal auditing=Audit Internal Sawyer buku 1 edisi 5. Salemba Empat.
Lua i Stíl Chicago (17ú heag.)Sawyer, Lawrence B. Sawyer's Internal Auditing=Audit Internal Sawyer Buku 1 Edisi 5. Salemba Empat, 2009.
Lua MLA (8ú heag.)Sawyer, Lawrence B. Sawyer's Internal Auditing=Audit Internal Sawyer Buku 1 Edisi 5. Salemba Empat, 2009.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.