Gaya APA
WÅHLBERG, A, A. (2009).
DRIVER BEHAVIOUR AND ACCIDENT RESEARCH METHODOLOGY; Unresolved Problems .
Amerika:
Ashgate Publishing Company.
Gaya MLA
WÅHLBERG, ANDERS, AF.
"DRIVER BEHAVIOUR AND ACCIDENT RESEARCH METHODOLOGY; Unresolved Problems".
Amerika:
Ashgate Publishing Company,
2009.
Text.