No Inv.: 131409/SM/Perp/12/1c
No Inv.: 109823/PSM/Perp/07/1c
Judul asli : "Communication of Innovations"
No Inv.: 1179-1183/P/Perp/94/5c~1232/P/Perp/87/1c
Bibliografi : hlm. 261-267
Bibliografi : hlm. 385-392
Termasuk Bibliografi
Bibliografi : hlm. 210-214
Bibliografi : hlm. 303-304