Lehmann, Donald R.
Market research and analysis
Topan, 1989
Buku Teks
Lehmann, Donald R.
Market research and analysis
Richard D. Irwin, 1989
Buku Teks
Lehmann, Donald R.
Market research and analysis
Richard D. Irwin, 1979
Buku Teks
Market research in health and social care
Mike Luck, Rob Pocock, Mike Tricker, editor
Routledge, 2000
Buku Teks
Artificial market study as interdiciplinary research
Artikel Jurnal