Markus, John, 1911-
McGraw-Hill, 1982
Buku Teks
Tarlekar, G. H., author
Motial Banarsidass Publishers, 1991
Buku Teks
Thirlwall, Anthony Philip, author
English Language Book Society, 1978
Buku Teks
Greenberg, Joseph H. (Joseph Harold), 1915-2001, author
Mounton, 1976
Buku Teks
edited by A. Grenfell Price
Angus & Robertson, 1959
Buku Teks