Istifatun Zaka
Whats The Matter with Quarter Life Crisis
Buku Bijak, 2022
 Buku Teks
Hollander, Stanley C.
Explorations in retailing
Michigan State University , 1960
 Buku Teks
Willis, James F.
Explorations in microeconomics
North West Publishing, 2002
 Buku Teks
What's wrong with moralism?
C. A. J. Coady
Blackwell Publishing, 2006
 Buku Teks
White, Thomas Y
Right and wrong / Thomas YWhite
Prentice-Hall, 1988
 Buku Teks