Schmidt, M. F. (1937). Operating expenses of the retail lumber yards in the mountain states region, 1936. Bureau of Business and Government Research, Universtiy of Colorado.
Chicago-viite (17. p.)Schmidt, Martin Frederick. Operating Expenses of the Retail Lumber Yards in the Mountain States Region, 1936. [Boulder]: Bureau of Business and Government Research, Universtiy of Colorado, 1937.
MLA-viite (8. p.)Schmidt, Martin Frederick. Operating Expenses of the Retail Lumber Yards in the Mountain States Region, 1936. Bureau of Business and Government Research, Universtiy of Colorado, 1937.
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