No Inv.: 675-676/BD/Perp/86/2c
Bibliografi : hlm. 134 - 135
No Inv.: 751-752/S/Perp/87/2c~1886/S/Perp/87/1c~2088/S/Perp/1c
No Inv.: 58-61/P/Perp/94/4c
Judul asli : "Making Time Work for You"
No Inv.: 1982-1987/S/Perp/88/6c~277/S/Perp/91/1c~1636/S/Perp/89/1c
Judul asli : "Personal Time Management"