Dyfyniad APA

(2007). Auditing and assurance services. New York: McGraw-Hill.

Dyfyniad Arddull Chicago

Auditing and Assurance Services. New York: McGraw-Hill, 2007.

Dyfyniad MLA

Auditing and Assurance Services. New York: McGraw-Hill, 2007.

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