Sarabjot Singh
Specialty store and multi-brand store loyalty: an indian consumer perspective. / Sarabjot Singh, Piyush Kumar Sinha, Hari Govind Mishra
Management, Faculty of Economics, University of Indonesia and Philip Kotler Center, 2013
 Artikel Jurnal
Ruzaimi Mat Rani
Perspective creative 01: one point perspective
Words & Visuals Press Pte Ltd,
 Buku Referensi
Elkins, James
The poetics of perspective
Cornell University Press, 1994
 Buku Teks
The Sociological perspective: introductory readings
edited Scott G. Mcnall
Little, Brown, 1968
 Buku Teks
Gopal, Shuba
Bioinformatics: a computing perspective
McGraw-Hill, 2009
 Buku Teks