Dyfyniad APA

(1977). Report to the congress. Washington, D. C: General Accounting Office.

Dyfyniad Arddull Chicago

Report to the Congress. Washington, D. C: General Accounting Office, 1977.

Dyfyniad MLA

Report to the Congress. Washington, D. C: General Accounting Office, 1977.

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