Terbit pertama kali : Toko Indonesia, Weltervreden, 1928
Judul asli : "The book of overthinking : how to stop the cycle of worry"
Perpustakaan hanya memiliki jil.2
No Inv.: 120829/SM/Perp/09/1c
No Inv.: 122492-122495/P/Perp/10/4c
No Inv.: 97/P/Perp/95/1c~1605/BP3KN/Perp/86/1c~4953/BP3KN/Perp/86/1c~2224-2233/P/Perp/96/10c~9753-9757/P/Perp/97/5c