Davies, J.B. Meredith, author
Baillere Tindall, 1975
Buku Teks
Penalver, Rafael A., author
Arco Publishing, Inc., 1981
Buku Teks
Penalver, Rafael A., author
Arco Publishing, 1984
Buku Teks
Leavel, Hugh Rodman, author
McGraw-Hill, 1958
Buku Teks
edited by Philip E. Sartwell
Appleton Century Crofts, 1973
Buku Teks