Gaya APA
Niebel, Benjamin W.. (1978).
Motion and time study Benjamin W. Niebel (7th ed.).
Homewood:
Richard D. Irwin.
Gaya Chicago
Niebel, Benjamin W..
Motion and time study Benjamin W. Niebel.
7th ed.
Homewood:
Richard D. Irwin,
1978.
Text.
Gaya MLA
Niebel, Benjamin W..
Motion and time study Benjamin W. Niebel.
7th ed.
Homewood:
Richard D. Irwin,
1978.
Text.
Gaya Turabian
Niebel, Benjamin W..
Motion and time study Benjamin W. Niebel.
7th ed.
Homewood:
Richard D. Irwin,
1978.
Print.