edited by Frederick C. Allard
McGraw-Hill, 1990
Buku Referensi
edited by Helmut F. Wolf
Garland STPM Press, 1979
Buku Referensi
edited by Frederick C. Allard
McGraw-Hill, 1989
Buku Referensi
John Wiley & Sons, 1980
Buku Teks
Cherin, Allen H.
McGraw-Hill, 1987
Buku Teks