Παραπομπή σε μορφή APA (7η εκδ.)

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.

Παραπομπή σε μορφή Chicago (17η εκδ.)

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.

Παραπομπή σε μορφή MLA (8th εκδ.)

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.