Bibliografi : hlm. 793-892
Judul asli : "The Professional Secretary : Skill and Techniques for Recognition and Sources"
No Inv.: 5257-5259/S/Perp/86/3c~12813-12817/P/Perp/94/5c
Bibliografi : hlm. 315-320
No Inv.: 110640-110643/P/Perp/07/3c
No Inv.: 114074/P/Perp/08/1c