Congressional Research and Training Service. (1992). Citizens' guide to Congress. CRTS.
Dyfyniad Arddull ChicagoCongressional Research and Training Service. Citizens' Guide to Congress. Quezon City: CRTS, 1992.
Dyfyniad MLACongressional Research and Training Service. Citizens' Guide to Congress. CRTS, 1992.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.