Citazione Stile APA (7a Edizione)

Davidson, G., & Grey, J. (2012). Geography study guide: Grade 12 (Stand: Oktober 2012.). Department of Basic Education.

Citazione stile Chigago Style (17a edizione)

Davidson, Gail, e Julia Grey. Geography Study Guide: Grade 12. Stand: Oktober 2012. Pretoria: Department of Basic Education, 2012.

Citatione MLA (9a ed.)

Davidson, Gail, e Julia Grey. Geography Study Guide: Grade 12. Stand: Oktober 2012. Department of Basic Education, 2012.