APA-viite (7. p.)

Grigg, A. O., & Huddart, L. (1977). An opinion survey of the Yorkshire Dales rail service in 1977. Transport and Road Research Laboratory.

Chicago-viite (17. p.)

Grigg, A. O., ja L. Huddart. An Opinion Survey of the Yorkshire Dales Rail Service in 1977. Crowthorne, Eng: Transport and Road Research Laboratory, 1977.

MLA-viite (9. p.)

Grigg, A. O., ja L. Huddart. An Opinion Survey of the Yorkshire Dales Rail Service in 1977. Transport and Road Research Laboratory, 1977.