Denney, Robert W., author
Van Nostrand Reinhold, 1983
Buku Teks
Lovelock, Christopher H., author
Pearson Prentice Hall, 2001
Buku Teks
Lovelock, Christopher H., author
Prentice-Hall, 2000
Buku Teks
Lovelock, Christopher H., author
Prentice-Hall, 1960
Buku Teks
Zeithaml, Valarie A., author
The McGraw-Hill , 1996
Buku Teks