Mitchell, Basil, author
Oxford University Press, 1970
Buku Teks
Stevenson, Nicholas, author
Longman, 1999
Buku Teks
Midgley, Mary, author
Routledge, 1998
Buku Teks
Hall, Robert T.
Harper and Row, 1971
Buku Teks
Chapra, M. Umer (Muhammad Umer), 1933-, author
Edward Elgar, 2014
Buku Teks