Lair, E.A.
McGraw-Hill Book Company, Inc , 1947
Buku Teks
Gutdeutsch, Goitz, author
Birkhal'user, 1997
Buku Teks
Wilcox, W. Wayne, author
John Wiley & Sons, 1991
Buku Referensi
Wilson, J. Douglas (John Douglas), author
McGraw-Hill, 1973
Buku Teks
Kubler, Hans, author
John Wiley & Sons, 1980
Buku Teks