Aspek endapan (scaling) pada rencana PLTP siklus binari di lapangan panas bumi Dieng, Jawa Tengah
 Artikel Jurnal
Schiffman, Susan S.
Introductin to multidimensional scaling : theory, methods, and applications
Academic Press, 1981
 Buku Teks
Introduction to multidimensional scaling: theory, methods and applications
 Buku Teks
Devellis, Robert F.
Scale development : theory and application
Sage, 1991
 Buku Teks
Devellis, Robert F.
Scale development : theory and application
Sage, 1991
 Buku Teks