Lounsbury, J. F. (1986). Geographic field methods and techniques. Charles E. Merrill Pub. Co.
Cita Chicago (17th ed.)Lounsbury, John F. Geographic Field Methods and Techniques. Columbus, Ohio: Charles E. Merrill Pub. Co, 1986.
Cita MLA (9th ed.)Lounsbury, John F. Geographic Field Methods and Techniques. Charles E. Merrill Pub. Co, 1986.
Atenció: Aquestes cites poden no estar 100% correctes.