Jackson, R. L. (1979). Luxury express commuter coach services. Transport and Road Research Laboratory.
Chicago-viite (17. p.)Jackson, R. L. Luxury Express Commuter Coach Services. Crowthorne, [Eng.]: Transport and Road Research Laboratory, 1979.
MLA-viite (9. p.)Jackson, R. L. Luxury Express Commuter Coach Services. Transport and Road Research Laboratory, 1979.
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