Williams, A., Zeleza, T., & Sharman, M. (1989). Revising for history and government K.C.S.E (First published.). Evans Brothers Limited.
Citazione stile Chigago Style (17a edizione)Williams, Aidan, Tiyambe Zeleza, e Margaret Sharman. Revising for History and Government K.C.S.E. First published. London Ibadan: Evans Brothers Limited, 1989.
Citatione MLA (9a ed.)Williams, Aidan, et al. Revising for History and Government K.C.S.E. First published. Evans Brothers Limited, 1989.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.