Gaya APA

Louwers, T, J, L, T, J. (2007). Auditing and assurance services.-- (Ed.2nd.--). America: McGraw-Hill.

Gaya MLA

Louwers, Timothy, J., Louwers,, Timothy, J.. "Auditing and assurance services.--". Ed.2nd.-- America: McGraw-Hill, 2007. Buku.