Dyfyniad APA

Handbook of procedures: 1st April, 1997-31stMarch, 2002.2V.

Dyfyniad Arddull Chicago

Handbook of Procedures: 1st April, 1997-31stMarch, 2002.2V. :.

Dyfyniad MLA

Handbook of Procedures: 1st April, 1997-31stMarch, 2002.2V.

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