Govoni, Laura
Appleton , 1978
Buku Teks
Shannon, Margaret T., author
Appletton & Lange , 1992
Buku Teks
Gerald, Michael C., author
Prentice-Hall, 1981
Buku Teks
Gerald, Michael C.
Prentice-Hall, 1981
Buku Teks
Krantz, John C., author
Williams & Wilkins, 1974
Buku Teks