Bibliografi : hlm. 373-374 No. Inv. : 146238-14629/P/Perp/15/2c
No Inv.: 110910-110911,110913-110914/P/Perp/07/4c~119443-119445/P/Perp/09/3c~122953-122957/P/Perp/10/5c~138222-138226/P/Perp/14/5c
Bibliografi : hlm. 210-223
No Inv.: 146738/P/Perp/14/1c
Bibliografi : hlm. 345-351
Judul asli : "Economics"
Bibliografi : hlm. 159-164; No Inv.: 140537/Sm/Perp/14/1c~146664,146665/P/Perp/14/2c
No Inv.: 131800/S/Perp/12/1c
No Inv.: 120955/S/Perp/09/1c