Brownlee, W. Elliot, 1941-
Federal taxation in America : a history
Cambridge University Press, 2016
 Buku Teks
Evaluating federal systems / edited by Bertus De Villiers
M. Nijhoff Publishers, 1994
 Buku Teks
Basic law : for the federal republic of Germany / Edited by The Linguistic section of the Foreign Office of the Federal Republic of Germany
The Press and Information Office, 1973
 Buku Teks
Powell, Fred Wilbur
Control of federal expenditures : a documentary history, 1775-1894 / compiled by Fred Wilbur Powell
Brookings Institution, 1939
 Buku Teks
The Educational system in the federal Republic of Germany / edited by Gerdi Jonen
Foreign office of the federal Republic of Germany , 1982
 Buku Teks