Bargen, B. (1934). Tabulation technique: A summary of the column-center principle underlying correct arrangement of columnar typing. The Gregg Pub. Co..
Chicago-referens (17:e uppl.)Bargen, Bernhard. Tabulation Technique: A Summary of the Column-center Principle Underlying Correct Arrangement of Columnar Typing. New York : Chicago [etc.]: The Gregg Pub. Co., 1934.
MLA-referens (8:e uppl.)Bargen, Bernhard. Tabulation Technique: A Summary of the Column-center Principle Underlying Correct Arrangement of Columnar Typing. The Gregg Pub. Co., 1934.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.