Bibliografi : hlm. 269-270 No Inv.: 11532-11541/P/Perp/98/10c
No Inv.: 5257-5259/S/Perp/86/3c~12813-12817/P/Perp/94/5c
Judul asli : "The Professional Secretary : Skill and Techniques for Recognition and Sources"
No Inv.: 1241/S/Perp/88/1c~401/S/Perp/93/1c~107263/S/Perp/06/1c
Judul asli : "How to be an Effective Secretary"
No Inv.: 6850-6854/P/Perp/92/5c
No Inv.: 4947-4951/P/Perp/93/5c~826/P/Perp/93/1c~2488/P/Perp/93/1c
No Inv.: 1704/S/Perp/88/1c~1307/S/Perp/87/1c~548/S/Perp/88/1c~1826/S/Perp/96/1c
No Inv.: 110164/PH/Perp/07/1c