Viti de Marco, Antonio de, marchese, 1858-1943, author
Jonathan Cape, 1958
Buku Teks
Pigou, A.C. (Arthur Cecil), author
Macmillan, 1951
Buku Teks
Pigou, A.C. (Arthur Cecil), author
Macmillan, 1956
Buku Teks
Dalton, Hugh
Routledge & Kegan Paul , 1948
Buku Teks
Dalton, Hugh
Routledge dan Kegan Paul , 1954
Buku Teks