Smith, H.W.
Strategies of social research : the methodological imagination
Prentice-Hall, 1981
Buku Teks
Ecological design handbook : sustainable strategies for architecture, landscape architecture, interior design, and planning
edited by Fred A. Stitt
McGraw-Hill, 1999
Buku Teks
Ecological design handbook: sustainable strategies for architecture, landscape architecture, interior design, and planning
Stitt, Fred A., editor
McGraw-Hill, 1999
Buku Referensi
Churchill, Gilbert A.
Marketing research : methodological foundations
The Dryden Press, 1995
Buku Teks
Churchill, Gilbert A.
Marketing research : methodological foundations
Thomson, 2005
Buku Teks