APA-referens (7:e uppl.)

Godfrey, R. R., & York, D. L. (1994). Higher bond yields: The triple-A advantage of insured municipal bonds. Irwin.

Chicago-referens (17:e uppl.)

Godfrey, Robert R., och Diana L. York. Higher Bond Yields: The Triple-A Advantage of Insured Municipal Bonds. Burr Ridge, Ill: Irwin, 1994.

MLA-referens (9:e uppl.)

Godfrey, Robert R., och Diana L. York. Higher Bond Yields: The Triple-A Advantage of Insured Municipal Bonds. Irwin, 1994.