Purdy, William C., author
McGraw-Hill, 1965
Buku Teks
Holme, David J., author
John Wiley & Sons, 1994
Buku Teks
Purdy, William C., author
McGraw-Hill, 1965
Buku Teks
Holme, David J., author
Longman Scientific & Technical, 1993
Buku Teks
Raz, Sarwar Alam, author
Wiley Eastern Private, 1974
Buku Teks