Butlin, R. A. (1993). Historical geography: Through the gates of space and time. Amold.
Cita Chicago (17th ed.)Butlin, Robin A. Historical Geography: Through the Gates of Space and Time. London: Amold, 1993.
Cita MLA (9th ed.)Butlin, Robin A. Historical Geography: Through the Gates of Space and Time. Amold, 1993.
Atenció: Aquestes cites poden no estar 100% correctes.