Gaya APA
Labor Economics. (1967).
Amerika:
Richard D. Irwin.
Gaya Chicago
Labor Economics.
Ed. 5.
Amerika:
Richard D. Irwin,
1967.
.
Gaya MLA
Labor Economics.
Ed. 5.
Amerika:
Richard D. Irwin,
1967.
.
Gaya Turabian
Labor Economics.
Amerika:
Richard D. Irwin,
1967.
.