Citazione Stile APA (7a Edizione)

Gopsill, G., & Bessley, F. (1964). Practical geography: Exercises with modles and improvised equipment. Macmillan.

Citazione stile Chigago Style (17a edizione)

Gopsill, G.H, e Frank Bessley. Practical Geography: Exercises with Modles and Improvised Equipment. London: Macmillan, 1964.

Citatione MLA (9a ed.)

Gopsill, G.H, e Frank Bessley. Practical Geography: Exercises with Modles and Improvised Equipment. Macmillan, 1964.