Citazione Stile APA (7a Edizione)

Chu, G. H. (2011). My world - geography ([1-year student license].). Pearson Education, Prentice Hall.

Citazione stile Chigago Style (17a edizione)

Chu, Gregory H. My World - Geography. [1-year student license]. Boston [u.a.]: Pearson Education, Prentice Hall, 2011.

Citatione MLA (9a ed.)

Chu, Gregory H. My World - Geography. [1-year student license]. Pearson Education, Prentice Hall, 2011.