No Inv.: 113731-113736/P/perp/08/6c
No. Inv. : 146136-146137/P/Perp/15/2c
Bibliografi : hlm. 187-190
Bibliografi : hlm. 513-523
Bibliografi : hlm. 153-155
Bibliografi : hlm. 219-222
Terdapat bibliografi
Judul asli : "The book of overthinking : how to stop the cycle of worry"
Bibliografi : hlm. 229-237