W. W. Gilbert. (1985). Regional geography; a post-matriculation. Tuiversity of London Press.
Citazione stile Chigago Style (17a edizione)W. W. Gilbert. Regional Geography; a Post-matriculation. Londo: Tuiversity of London Press, 1985.
Citatione MLA (9a ed.)W. W. Gilbert. Regional Geography; a Post-matriculation. Tuiversity of London Press, 1985.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.