APA-referens (7:e uppl.)

Martin, P. C. (2006). Bus use of shoulders. Transportation Research Board.

Chicago-referens (17:e uppl.)

Martin, Peter C. Bus Use of Shoulders. Washington, D.C: Transportation Research Board, 2006.

MLA-referens (9:e uppl.)

Martin, Peter C. Bus Use of Shoulders. Transportation Research Board, 2006.