Ferguson, John H.
The American federal goverment
McGraw-Hill, 1961
 Buku Teks
Joske, Percy Ernest
Australian federal government
Butterworth, 1967
 Buku Teks
Malik Muhammad Irfan
Legal Tender Act 1862: Kebijakan Pemerintah Federal Pada Masa Perang Saudara di Amerika Serikat, 1861-1865 = Legal Tender Act 1862: U.S. Federal Government Policy during the American Civil War of 1861-1865
Fakultas Ilmu Pengetahuan dan Budaya Universitas Indonesia, 2021
 UI - Makalah dan Kertas Kerja
OConnor, Karen
American government
Addison Wesley Longman, 2001
 Buku Teks
Welch, Susan
American government
Thomson, 2006
 Buku Teks