Carroll, P., & Dyer, C. D. (1950). How to chart timestudy data (3rd ed.). McGraw-Hill.
Cita Chicago Style (17a ed.)Carroll, Phil, y C. D. Dyer. How to Chart Timestudy Data. 3rd ed. New York [etc.]: McGraw-Hill, 1950.
Cita MLA (9a ed.)Carroll, Phil, y C. D. Dyer. How to Chart Timestudy Data. 3rd ed. McGraw-Hill, 1950.
Precaución: Estas citas no son 100% exactas.