Nute, Kevin
Van Nostrand Reinhold, 1993
Buku Teks SO
Cregier, Don M.
University Of Missouri Press, 1976
Buku Teks SO
edited by Walter Gratzer
W.H.Freeman and Company, 1999
Buku Referensi
edited by John Dixon Hunt and Peter Willis
MIT Press, 2000
Buku Teks SO
International Council of Shopping Centers
Retail reporting Corp., 1996
Buku Referensi