Chamberlin, Edward Hastings, author
Harvard University Press, 1946
Buku Teks
Triffin, Robert, author
Harvard University Press, 1941
Buku Teks
Robinson, Joan, author
Macmillan, 1948
Buku Teks
Stigler, George J., author
Macmillan, 1957, c.1942
Buku Teks
Stigler, George J., author
Macmillan, 1966
Buku Teks