APA

International Road Federation I., . (1994). Report on the current status of direction signing on the Trans European Road Network (TERN) and a cost benefit study relating to harmonised direction sign on TERN. Geneve: International Road Federation, IRF.

Chicago

International Road Federation IRF, . 1994. Report on the current status of direction signing on the Trans European Road Network (TERN) and a cost benefit study relating to harmonised direction sign on TERN. Geneve: International Road Federation, IRF.

Harvard

International Road Federation I., . (1994). Report on the current status of direction signing on the Trans European Road Network (TERN) and a cost benefit study relating to harmonised direction sign on TERN. Geneve: International Road Federation, IRF.

MLA

International Road Federation IRF, . Report on the current status of direction signing on the Trans European Road Network (TERN) and a cost benefit study relating to harmonised direction sign on TERN. Geneve: International Road Federation, IRF. 1994.