McNeill, Patrick
Research methods
Routledge, 1990
 Buku Teks
White, Theresa L.
Research methods
Wadsworth and Cengage Learning, 2013
 Buku Teks
McNeill, Patrick
Research methods
Routledge, 1999
 Buku Teks
Larson, Richard C., 1943-
Urban operations research
Prentice-Hall, 1981
 Buku Teks
Andranovich, Gregory D.
Doing urban research
Sage, 1993
 Buku Teks