edited by K.N. Tu and R. Rosenberg
Academic Press, 1982
Buku Teks
Heavens, O.S., author
Dover, 1991
Buku Teks
Eckertova, Ludmila, author
Plenum Press, 1986
Buku Teks
edited by J.M. Poate, K.N. Tu and J.W. Mayer
John Wiley & Sons, 1978
Buku Teks
Soohoo, Ronald F., author
Harper & Row, 1965
Buku Teks