edited by Richard N. White, Charles G. Salmon
John Wiley & Sons, 1987
Buku Referensi
Frederick S. Merritt and Jonathan T. Ricketts, editor
McGraw-Hill, Inc, 1994
Buku Referensi
Newman, Morton, author
McGraw-Hill, 1993
Buku Referensi
Newman, Morton, author
McGraw-Hill, 1992
Buku Referensi
edited by Peter S. Hopf
McGraw-Hill, 1979
Buku Referensi