Khalid, Rasheed O.
S l. : s.n., 1967,
Buku Teks
Lewis, William Arthur, 1915-, author
Harper & Row, 1966
Buku Teks
Caiden, Naomi, author
John Wiley & Sons, 1974
Buku Teks
Saeed, Khalid, author
Avebury, 1994
Buku Teks
Hansen, Alvin H. (Alvin Harvey), 1887-1975, author
W.W. Norton, 1941
Buku Teks