Gaya APA
Cohn, Louis. (1981).
NCHRP SHP 87. Highway noise barriers .
:
TRB.
Gaya Chicago
Cohn, Louis.
NCHRP SHP 87. Highway noise barriers.
:
TRB,
1981.
Chart.
Gaya MLA
Cohn, Louis.
NCHRP SHP 87. Highway noise barriers.
:
TRB,
1981.
Chart.
Gaya Turabian
Cohn, Louis.
NCHRP SHP 87. Highway noise barriers.
:
TRB,
1981.
Chart.