APA aipamena

 Hightower, R. (2009).  Internal controls policies and procedures.  Wiley.

Chicago Style aipamena

 Hightower, Rose.  Internal Controls Policies and Procedures.  Wiley, 2009.

MLA aipamena

 Hightower, Rose.  Internal Controls Policies and Procedures.  Wiley, 2009.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.