Bibliografi : hlm. 461-480
No Inv.: 144253/Sm/Perp/14/1c
No Inv.: 373-374/BD/Perp/86/2c
No Inv.: 1022/P/Perp/95/1c
Judul asli : "Steps to Success and Achievement"
Bibliografi : hlm. 193-194
No Inv.: 2021-2022/Perp/85/2c
No. Inv. : 146401-146402/P/Perp/15/2c