No Inv.: 277/P/Perp/96/1c
No Inv.: 1107/P/Perp/92/1c
No Inv.: 1390-1391/BD/Perp/86/2c
Judul asli : "Teaching Elementary School Mathematics for Understanding"
No Inv.: 1259-1261/BD/Perp/91/3c
No Inv.: 80647/P/02/1c~112723-112726/P/Perp/08/4c
No Inv.: 608-617/P/Perp/96/10c
No Inv.: 622/PS2PT/Perp/96/1c~108368-108369/PH/Perp/06/2c
No Inv.: 130272/PH/Perp/11/1c
No Inv.: 301-312/Perp/79/12c