Bade, Robin
Pearson, 2013
Buku Teks
Peters, Michael A.
Sense, 2012
eBooks
Pigou, Arthur Cecil, 1877-1959
Macmillan, 1952
Buku Teks
Khan, M. Fahim,author
The Islamic Foundation , 1995
Buku Teks
Khan, Muhammad Mansoor
The islamic foundation (great britain) , 1995
Buku Teks