Isiokwu Ya na Ya Yiri mrt isiokwu 9 Chineke Nyere Iwu Banyere Ịdị Ọcha Tupu Ndị Sayensị Amata Uru Ọ Bara Ụzọ 6 Isi Chekwaa Ahụ́ Ike Gị Teta!—2003 Ihe O Kwuru Dabara n’Ihe Ndị Dọkịta Chọpụtara Ụlọ Nche Ikwupụta Alaeze Jehova—2012 Gịnị Mere Ịdị Ọcha Ji Dị Mkpa? Ụlọ Nche Ikwupụta Alaeze Jehova—2008 Ụzọ Isii Isi Chebe Ahụ Ike Gị Teta!—1997 Akwụkwọ Sitere n’Aka Chineke Ụlọ Nche Ikwupụta Alaeze Jehova—1998 “Iwu Jehova Zuru Okè” Bịaruo Jehova Nso