Bibliografi : hlm. 323-329
No Inv.: 5031-5039/BD/Perp/90/9c
No Inv.: 267-268/P/Perp/94/2c
Judul asli : "Persuasive Speaking"
No Inv.: 178/S/Perp/93/1c
Judul asli : "Introduction to Statistics"
Judul asli : "Maths Through Play"
No Inv.: 722-728/S/Perp/98/7c
Bibliografi : hlm. 716-729
No Inv.: 90130/S/Perp/04/1c~108286-108290/S/Perp/06/5c