Gaya APA
Understanding Labor Problems. (1959).
New York:
The McGraw-Hill Companies.
Gaya Chicago
Understanding Labor Problems.
.
New York:
The McGraw-Hill Companies,
1959.
.
Gaya MLA
Understanding Labor Problems.
.
New York:
The McGraw-Hill Companies,
1959.
.
Gaya Turabian
Understanding Labor Problems.
New York:
The McGraw-Hill Companies,
1959.
.