Citazione Stile APA (7a Edizione)

Ule, H. N., Atoh, M. G., & Ayuwo, O. (2022). Social studies, class 5 (First edition.). NMI Education.

Citazione stile Chigago Style (17a edizione)

Ule, Helen Ngoe, Maria Goretti Atoh, e Odette Ayuwo. Social Studies, Class 5. First edition. Yaounde - Cameroon: NMI Education, 2022.

Citatione MLA (9a ed.)

Ule, Helen Ngoe, et al. Social Studies, Class 5. First edition. NMI Education, 2022.