Huddart, L. (1981). Response to a bus service for countryside recreation: A home interview survey. Transport and Road Research Laboratory.
Chicago-referens (17:e uppl.)Huddart, L. Response to a Bus Service for Countryside Recreation: A Home Interview Survey. Crowthorne, Berkshire: Transport and Road Research Laboratory, 1981.
MLA-referens (9:e uppl.)Huddart, L. Response to a Bus Service for Countryside Recreation: A Home Interview Survey. Transport and Road Research Laboratory, 1981.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.