No Inv.: 128192/SM/Perp/10/1c
Bibliografi : hlm. 153-154
No Inv.: 116238-116240/P/Perp/09/3c
No Inv.: 1464/S/Perp/88/1c~161-163/S/Perp/90/3c~1374/S/Perp/89/1c~229/S/Perp/91/1c~736/S/Perp/91/1c~876-877/S/Perp/94/2c~90207/S/Perp/04/1c~90207/S/Perp/06/1c~107132/S/Perp/06/1c~115546/PH/Perp/08/1c~134236-134238/SM/Perp/13/3c
No Inv.: 129998/SM/Perp/11/1c~135088,135089/SM/Perp/13/2c
No Inv.: 116491-116493/P/Perp/09/3c
No Inv.: 12554/Perp/62/1c~48515/Perp/69/1c
Judul asli : "The Skill of Communicating"
No Inv.: 2480/S/Perp/87/1c