Wallah bin Wallah. Malenga wa ziwa kuu : maswali na istilahi za kifasihi / Wallah bin Wallah. - Nairobi : East Africa Educational Publishers 1988. - xxxi, 171 p. ; 21 cm. ISBN: 9966463690 : 9789966463692 LCCN: 88981059 LC Class. No.: MLCS 90/05534 (P)