Routledge, 2000
eBooks
Adams, John, 1938-, author
St. Martin's Press, 1985
Buku Teks
edited by George T. Crane and Abla Amawi
Oxford University Press, 1997
Buku Teks
Archer, Jerome W., author
McGraw-Hill, 1966
Buku Teks
Blackwell Publisher, 1994
Buku Teks