Cita APA

Thoman, R. S. (1964). Focus on geographic activity: A collection of original studies/ by. McGraw-Hill.

Citación estilo Chicago

Thoman, Richard S. Focus on Geographic Activity: A Collection of Original Studies/ by. New York: McGraw-Hill, 1964.

Cita MLA

Thoman, Richard S. Focus on Geographic Activity: A Collection of Original Studies/ by. McGraw-Hill, 1964.