Omwoyo, F., & Akivaga, P. (2010). Comprehensive geography (Revised edition, new syllabus.). Longhorn Publishers.
Citazione stile Chigago Style (17a edizione)Omwoyo, Fred, e Phyllis Akivaga. Comprehensive Geography. Revised edition, new syllabus. Nairobi, Kenya Dar es Salaam, Tanzania Kampala, Uganda: Longhorn Publishers, 2010.
Citatione MLA (9a ed.)Omwoyo, Fred, e Phyllis Akivaga. Comprehensive Geography. Revised edition, new syllabus. Longhorn Publishers, 2010.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.