APA-ийн эшлэл(7 дахь хэвлэлт)

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

Чикаго-гийн эшлэл (17 дахь хэвлэлт)

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

MLA -ийн эшлэл (9 дэх хэвлэлт)

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