APA
Norrbom C., Ståhl A., . (1991). Mobility and transport for elderly and disabled persons. 5th international conference, Älvsjö, Sweden, 21-24 May 1989. Proceedings. Philadelphia, PA: Gordon and Breach Science Publishers.
Chicago
Norrbom Claes-Eric, Ståhl Agneta, . 1991. Mobility and transport for elderly and disabled persons. 5th international conference, Älvsjö, Sweden, 21-24 May 1989. Proceedings. Philadelphia, PA: Gordon and Breach Science Publishers.
Harvard
Norrbom C., Ståhl A., . (1991). Mobility and transport for elderly and disabled persons. 5th international conference, Älvsjö, Sweden, 21-24 May 1989. Proceedings. Philadelphia, PA: Gordon and Breach Science Publishers.
MLA
Norrbom Claes-Eric, Ståhl Agneta, . Mobility and transport for elderly and disabled persons. 5th international conference, Älvsjö, Sweden, 21-24 May 1989. Proceedings. Philadelphia, PA: Gordon and Breach Science Publishers. 1991.