No Inv.: 133523/S/Perp/12/1c~144720/S/Perp/15/1c
No Inv.: 109952/PH/Perp/07/1c~121263/S/Perp/09/1c~134660/SM/Perp/13/1c~140766/PH/Perp/14/1c
Bibliografi No Inv.: 90555-90558/P/Perp/04/4c
Bibliografi : hlm. 427-430 No Inv.: 144305/PH/Perp/14/1c
Judul asli: "Principles of economic : an asian edition-volume 1"
No Inv.: 3072/P/99/1c
No Inv.: 102905/S/Perp/05/1c
No Inv.: 135539 /SM/Perp/13/1c