No Inv.: 122496-122500/P/Perp/10/5c
No Inv.: 116977/P/Perp/09/1c
Bibliografi : hlm. 405-426No Inv.: 137816-137817/P/Perp/14/2c
No Inv.: 137682/SM/Perp/13/1c
Judul asli :"Economics"
No Inv.: 138803,138804/P/Perp/14/2c
No Inv.: 776-777/BD/Perp/86/2c
No Inv.: 129548/S/Perp/11/1c