Gaya APA
Barnes, R, M. (1958).
Motion and Time Study Design and Mesurement Of Work : Seventh edition (7).
CANADA:
john willey & Sons Inc.
Gaya MLA
Barnes, Ralph, M.
"Motion and Time Study Design and Mesurement Of Work : Seventh edition".
7
CANADA:
john willey & Sons Inc,
1958.
Text.