Estey, James Arthur
Prentice-Hall, 1950
Buku Teks
Estey, James Arthur
Prentice-Hall, 1949
Buku Teks
Matthews, R.C.O.
University of Chicago Press, 1959
Buku Teks
Hald, Earl C.
Houghton-Mifflin, 1954
Buku Teks
by American Economic Association
Richard D. Irwin, 1951
Buku Teks