Bibliografi : Hlm. 201-203
Bibliografi : hlm. 88-89
No Inv.: 322/S/Perp/97/1c
No Inv.: 347/S/Perp/92/1c
No Inv.: 3557/Pb/Perp/91/1c
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