No Inv.: 11764/P/Perp/94/1c
Bibliografi : hlm. 179-181 No Inv.: 140888/PSM/Perp/14/1c~144245/Sm/Perp/14/1c~144442/SM/Perp/14/1c
Judul asli : "Effective Speaking"
Bibliografi : hlm. 193-194
Bibliografi : hlm. 193-194
No Inv.: 1560-1561/S/Perp/98/2c
No Inv.: 257/PSM/99/1c~341/S/00/1c
No Inv.: 129386/SM/Perp/11/1c~129981/SM/Perp/11/1c
No Inv.: 133908/SM/Perp/13/1c
Bibliografi : hlm. 224-235 No Inv.: 140779/S/Perp/12/1c