Broek,. (1965). Geography: Its scope and spirit. Charles E. Merrill.
Cita Chicago (17th ed.)Broek. Geography: Its Scope and Spirit. Columbus, Ohio: Charles E. Merrill, 1965.
Cita MLA (9th ed.)Broek. Geography: Its Scope and Spirit. Charles E. Merrill, 1965.
Atenció: Aquestes cites poden no estar 100% correctes.