Lu, Henry C., author
Black Dog & Leventhal Publishing, Inc, 1999
Buku Teks
Turner, Janet, author
B.T. Batsford, 1994
Buku Referensi
Azzam, Rasheed M., author
North-Holland, 1987
Buku Teks
Mueller, Conrad G.
Time Incoporated, 1966
Buku Teks
Chakovsky, A.
Progress, 1965
Buku Teks