No Inv.: 139913-139917/P/Perp/14/5c
No Inv.: 139764/P/Perp/14/1c
Judul asli : "The book of overthinking : how to stop the cycle of worry"
No Inv.: 134366/SM/Perp/13/1c~134984/SM/Perp/13/1c
Bibliografi :283-290
Bibliografi : hlm. 399-414
Bibliografi : hlm. 309 - 314