APA Style
Transportation : sector working paper. (1972).
:
Wash. : D.C..
Chicago Style
Transportation : sector working paper.
.
:
Wash. : D.C.,
1972.
.
MLA Style
Transportation : sector working paper.
.
:
Wash. : D.C.,
1972.
.
Turabian Style
Transportation : sector working paper.
:
Wash. : D.C.,
1972.
.