W. W. Gilbert. (1985). Regional geography; a post-matriculation. Tuiversity of London Press.
Cita Chicago (17th ed.)W. W. Gilbert. Regional Geography; a Post-matriculation. Londo: Tuiversity of London Press, 1985.
Cita MLA (9th ed.)W. W. Gilbert. Regional Geography; a Post-matriculation. Tuiversity of London Press, 1985.
Atenció: Aquestes cites poden no estar 100% correctes.