Halima C. Schmaling, Lawan Bala Hausawa (co-author of Book 1). Maganar Hannu. Harshen Bebaye na ƙasar Hausa/Hausa Sign Language. Liffafi na farko: Iyali/Book 1: Family, Kano: Good Image Printing Ltd., 2011, 28 pp; Littafi na biyu: Haɗuwa da sadarwa/Book 2: Meeting and communicating, Hamburg: Helmut Buske Verlag, 2013, 31 pp; Littafi na uku: Kwatancin mutane da abubuwa/Book 3: Describing people and things, Hamburg: Helmut Buske Verlag, 2016, 35 pp; Littafi na huɗu: Kasuwanci da kiɗaya/Book 4: Commerce and counting, Hamburg: Helmut Buske Verlag 2016, 32 pp; Littafi na biyar: Ayyukan yau da kullum/Book 5: Everyday activities, Hamburg: Helmut Buske Verlag, 2017, 35 pp.