Παραπομπή APA

Barnes, R. M. (1980). Motion and time study design and measurement of work (7th ed.). John Wiley & Sons.

Παραπομπή Chicago Style

Barnes, Ralph M. Motion and Time Study Design and Measurement of Work. 7th ed. New York: John Wiley & Sons, 1980.

Παραπομπή MLA

Barnes, Ralph M. Motion and Time Study Design and Measurement of Work. 7th ed. John Wiley & Sons, 1980.