Roth, Alexander, author
Noth-Holland, 1990
Buku Teks
Soohoo, Ronald F., author
Harper & Row, 1965
Buku Teks
edited by J.M. Poate, K.N. Tu and J.W. Mayer
John Wiley & Sons, 1978
Buku Teks
Heavens, O.S., author
Dover, 1991
Buku Teks
editor, J.E.E. Baglin
North-Holland, 1984
Buku Teks