APA Style

Barnes, , R, M. (1968). Motion and Time Study : Design and measurement of work (6th ed.) / Ralph M. Barnes (6). New York: John Wiley & Sons.

MLA Style

Barnes, , Ralph, M.. "Motion and Time Study : Design and measurement of work (6th ed.) / Ralph M. Barnes". 6 New York: John Wiley & Sons, 1968. Textbook ห้องสมุดทั่วไป.