Mitchell, C. G. B., Town, S. W., Hillman, M., & Whaley, A. (1979). Access to recreational activity. Transport and Road Research Laboratory.
Cita Chicago (17th ed.)Mitchell, C. G. B., S. W. Town, Mayer Hillman, i Anne Whaley. Access to Recreational Activity. Crowthorne, [Eng.]: Transport and Road Research Laboratory, 1979.
Cita MLA (9th ed.)Mitchell, C. G. B., et al. Access to Recreational Activity. Transport and Road Research Laboratory, 1979.
Atenció: Aquestes cites poden no estar 100% correctes.