No Inv.: 122551-122555/P/Perp/10/5c
No Inv.: 131266/SM/Perp/12/1c
Judul asli :"Seven times smarter"
Bibliografi : hlm. 329-337
Bibliografi : hlm. 273-279 No Inv.: 140872-140876/P/Perp/14/5c~144583/PH/Perp/14/1c
Bibliografi : hlm. 131-132
Bibliografi : hlm. 265-269No Inv.: 136556/SM/Perp/13/1c
No Inv.: 131721/PH/Perp/12/1c~140393/SM/Perp/14/1c