No Inv.: 103212/PSM/Perp/05/1c~118394-118396/P/Perp/09/3c~125935-125939/P/Perp/10/5c
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. 273-279No 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