Gaya APA
A second investigation into bilingual (Welsh/English) traffic signs. (1974).
:
TRRL.
Gaya Chicago
A second investigation into bilingual (Welsh/English) traffic signs.
.
:
TRRL,
1974.
Chart.
Gaya MLA
A second investigation into bilingual (Welsh/English) traffic signs.
.
:
TRRL,
1974.
Chart.
Gaya Turabian
A second investigation into bilingual (Welsh/English) traffic signs.
:
TRRL,
1974.
Chart.