Gregg, Pauline
A social and economic history of Britain 1760-1950
George G. Harrap, 1952
 Buku Teks SO
Lewis, William Arthur, 1915-
The principles of economic planning a study prepared for the Fabian society
George Allen & Unwin, 1951
 Buku Teks
Lewis, William Arthur, 1915-
The principles of economic planning: a study prepared for the Fabian Society
Unwin University Books, 1970
 Buku Teks SO
Cipolla, Carlo M.
The economic history of world population
Penguin, 1974
 Buku Teks SO
Surveys of economic theory. Prepared for the American Economic Association and the Royal Economic Society : volume I
Macmillan, 1965
 Buku Teks SO