Gothmann, William H.
Prentice-Hall, 1982
Buku Teks
Gothmann, William H.
Prentice-Hall, 1980
Buku Teks
Gothmann, William H.
Prentice-Hall, 1982
Buku Teks
Bolen, William H.
Prentice Hall International, 1988
Buku Teks
Meserve, Bruce B., author
Prentice-Hall, 1972
Buku Teks