No Inv.: 90423-90424/S/Perp/04/2c
No Inv.: 101236-101237/S/Perp/05/2c
Bibliografi : hlm. 469; No Inv.: 137489-137493/P/Perp/14/5c
Bibliografi : hlm. 179 - 182
Judul asli : "Managerial Breakthrough, a New Concept of the Manager`s Job"
No Inv.: 9759-9763/P/Perp/92/5c
No Inv.: 219-220/Perp/84/2c