edited by Walt Boyes
Butterworth-Heinemann, 2003
Buku Referensi
Lenk, John D.
McGraw-Hill, 1994
Buku Referensi
Lenk, John D.
McGraw-Hill, 1993
Buku Referensi
Markus, John, 1911-
McGraw-Hill, 1980
Buku Referensi
Markus, John, 1911-
McGraw-Hill, 1971
Buku Referensi