Brech, E.F.L., author
Longmans, Green & Co. , 1957
Buku Teks
Brech, E.F.L., author
Longman , 1970
Buku Teks
Allen, Louis A., author
McGraw-Hill Kogakusha, 1958
Buku Teks
O`Shaughnessy, John, author
George Allen and Unwin, 1974
Buku Teks
Lawrence L. Bethel ... [et al.]
McGraw-Hill, 1945
Buku Teks