Commons, John R.
The University of Wisconsin Press, 1961
Buku Teks
Beyme, Klaus Von, author
Springer, 2014
Buku Teks
Marks, John, author
Heinemann, 1983
Buku Teks
Sargent, Lyman Tower, author
Erlangga, 1987
Buku Teks
Schaper, B. W.
Van Gorcum , 1963
Buku Teks