Porter, Lindsay, author
Haynes Publishing, 1991
Buku Referensi
Porter, Lindsay, author
Porter Publishing, 1995
Buku Referensi
White, Charles, author
Haynes Publishing, 1992
Buku Referensi
Prentiss, Stan
Prentice-Hall, 1979
Buku Teks
Tooley, Michael H.
Newnes, 1994
Buku Teks