Simpson, Laurence P., author
Alexander Hamilton Institute, 1961
Buku Teks
Lyden, Donald P., author
McGraw-Hill, 1985
Buku Teks
Marsh, S.B., author
McGraw-Hill, 1992
Buku Teks
Donnell, John D., author
Richard D. Irwin, 1983
Buku Teks
Hurst, James Willard, author
Little, Brown, 1950
Buku Teks