Sekaran, Uma, author
Wiley, 2010
Buku Teks
Saunders, Mark, author
Pearson Education, 2016
Buku Teks
edited by Arch G. Woodside
Emerald, 2016
eBooks
Rambat Lupiyoadi, author
Penerbit Salemba Empat, 2015
Buku Teks
Sekaran, Uma, author
John Wiley & Sons, 1992
Buku Teks