Citazione Stile APA (7a Edizione)

Williams, W. K., & Mumu, J. (2005). Comprehensive geography (First published, new syllabus.). Longhorn Publishers.

Citazione stile Chigago Style (17a edizione)

Williams, Winfred Kambua, e Julia Mumu. Comprehensive Geography. First published, new syllabus. Nairobi, Kenya Kampala, Uganda Dar es Salaam, Tanzania: Longhorn Publishers, 2005.

Citatione MLA (9a ed.)

Williams, Winfred Kambua, e Julia Mumu. Comprehensive Geography. First published, new syllabus. Longhorn Publishers, 2005.