Citazione Stile APA (7a Edizione)

Zimmermann, A. (2016). Geography: Grade .. (First published 2016.). Macmillan Education Namibia.

Citazione stile Chigago Style (17a edizione)

Zimmermann, A. Geography: Grade .. First published 2016. Windhoek: Macmillan Education Namibia, 2016.

Citatione MLA (9a ed.)

Zimmermann, A. Geography: Grade .. First published 2016. Macmillan Education Namibia, 2016.