Chandrasekhar, S., author
Frederick A. Praeger, 1965
Buku Teks
Arnold, H.J.P., author
Dufour Editions, 1966
Buku Teks
Benham, Frederic, author
Oxford University Press, 1962
Buku Teks
Loutfi, Martha F.
Praeger Publishers, 1973
Buku Teks
edited by W. Lee Baldwin and W. David Maxwell
Lexington Books, 1975
Buku Teks