Blaug, Mark, author
Cambridge University Press, 1987
Buku Teks
Enke, Stephen, author
Prentice-Hall, 1951
Buku Teks
Staniland, Martin, author
RajaGrafindo Persada, 2003
Buku Teks
Burns, Arthur Edward, author
Harcourt, Brace, 1948
Buku Klasik
Komaruddin Sastradipoera, author
Kappa-Sigma, 2007
Buku Teks