Hawtrey, R.G., author
Longmans, Green, 1947
Buku Teks
Sutton, Antony C., author
Valiant Publishers, 1977
Buku Teks
Beach, Walter Edwards, author
Cambridge, Mass., Harvard University Press
Buku Teks
selected by a Committee of the American Economic Association
George Allen & Unwin, 1956
Buku Teks
Kurihara, Kenneth K., author
Allen & Unwin, 1951
Buku Teks