Dyfyniad APA

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

Dyfyniad Arddull Chicago

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

Dyfyniad MLA

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

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.