Gaya APA
Kennedy, Janet. (2004).
PPR 206 International Comparison of Roundabout Design Guidelines .
:
TRL.
Gaya Chicago
Kennedy, Janet.
PPR 206 International Comparison of Roundabout Design Guidelines.
:
TRL,
2004.
Text.
Gaya MLA
Kennedy, Janet.
PPR 206 International Comparison of Roundabout Design Guidelines.
:
TRL,
2004.
Text.
Gaya Turabian
Kennedy, Janet.
PPR 206 International Comparison of Roundabout Design Guidelines.
:
TRL,
2004.
Print.