Bhattacharyya, Dipak Kumar
Oxford University Press , 2014
Buku Teks
Jacobsen, Kathryn H.
Jones & Bartlett Learning, 2017
Buku Teks
edited by Francis M. Hult and David Cassels Johnson
Wiley Blackwell, 2015
Buku Teks
Zechmeister, Eugene B.
McGraw-Hill, 1992
Buku Teks
edited by Janet Holmes and Kirk Hazen
John Wiley & Sons, 2014
Buku Teks