Citazione Stile APA (7a Edizione)

Katzao, J. J. (1993). Understanding history: Namibian junior secondary textbook (2., (combined and revised) edition, 5. impression.). Longman Namibia.

Citazione stile Chigago Style (17a edizione)

Katzao, John J. Understanding History: Namibian Junior Secondary Textbook. 2., (combined and revised) edition, 5. impression. Windhoek: Longman Namibia, 1993.

Citatione MLA (9a ed.)

Katzao, John J. Understanding History: Namibian Junior Secondary Textbook. 2., (combined and revised) edition, 5. impression. Longman Namibia, 1993.