Citazione Stile APA (7a Edizione)

Boehm, R. G. (2015). Geography: The human and physical world ([High school].). McGraw-Hill Education.

Citazione stile Chigago Style (17a edizione)

Boehm, Richard G. Geography: The Human and Physical World. [High school]. Bothell, WA Chicago, IL Columbus, OH New York, NY: McGraw-Hill Education, 2015.

Citatione MLA (9a ed.)

Boehm, Richard G. Geography: The Human and Physical World. [High school]. McGraw-Hill Education, 2015.