Citazione Stile APA (7a Edizione)

Widdowson, J. (2008). This is geography (1. impr.). Hodder Education.

Citazione stile Chigago Style (17a edizione)

Widdowson, John. This Is Geography. 1. impr. London: Hodder Education, 2008.

Citatione MLA (9a ed.)

Widdowson, John. This Is Geography. 1. impr. Hodder Education, 2008.