Citazione Stile APA (7a Edizione)

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

Citazione stile Chigago Style (17a edizione)

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

Citatione MLA (9a ed.)

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