Downing, M.F.
E.& F.N. Spon, 1979
Buku Teks
Landphair, Harlow C.
Elsevier, 1979
Buku Teks
Strom, Steven, author
Van Nostrand Reindhold, 1993
Buku Teks
Strom, Steven, author
Van Nostrand Reindhold, 1993
Buku Teks
Sauter, David, author
Delmar/Cengage Learning, 2011
Buku Teks