No Inv.: 677/PS2PT/Perp/96/1c
No Inv.: 14366/P/Perp/94/1c
Judul asli : "Disziplin ohme Stafe"
No Inv.: 13566/P/Perp/94/1c
No Inv.: 723/P/Perp/97/1c
Judul asli : "Teaching Children Self-Discipline"
No Inv.: 147/S/99/1c
No Inv.: 106415/P/Perp/06/1c
No Inv.: 130992/SM/Perp/11/1c