Armstrong, Frank Bradley
Oxford University Press, 1979
Buku Teks
Bhagavan, N. V.
J. B. Lippincott Company, 1979
Buku Teks
edited by John M. Clark, Jr.
W.H. Freeman, 1964
Buku Teks
Garrett, R. (Reginald), author
Saunders College, 1995
Buku Teks
Karlson, P., author
Academic Press, 1967
Buku Teks