Cita APA (7th ed.)

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

Cita Chicago (17th ed.)

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

Cita MLA (9th ed.)

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