Sobolev, V. V.
Pergamon Press, 1975
Buku Teks
Belote, James H.
Harper & Row Publishers, 1967
Buku Teks
Breit, William.
Times Mirror/Mosby College Pub., 1986
Buku Teks
Tuttle, William M.
Atheneum, 1970
Buku Teks
Shemel, Sidney
Billboard, 1977
Buku Teks