Ginzberg, Eli
McGraw-Hill , 1966
Buku Teks
Toth, Ferenc L., editor
Springer, 2012
eBooks
Kreps, Juanita M., author
Wilson, 1955
Buku Teks
Soemitro Djojohadikusumo, author
LP3ES, 1977
Buku Teks
Ahmad, Ehtisham, author
Cambridge Uiversity Press, 1991
Buku Teks