Citazione Stile APA (7a Edizione)

Boehm, R. G., McTighe, J., & Zike, D. (2014). Discovering world geography. McGraw-Hill Education.

Citazione stile Chigago Style (17a edizione)

Boehm, Richard G., Jay McTighe, e Dinah Zike. Discovering World Geography. Bothell, WA [u.a.]: McGraw-Hill Education, 2014.

Citatione MLA (9a ed.)

Boehm, Richard G., et al. Discovering World Geography. McGraw-Hill Education, 2014.