Ahead with highway transportation :
a statement of policies of the National Highway Users Conference.

APA Citation

National Highway Users Conference. (1945). Ahead with highway transportation: a statement of policies of the National Highway Users Conference. Washington, D.C.: National Highway Users Conference.

MLA Citation

National Highway Users Conference. Ahead With Highway Transportation: a Statement of Policies of the National Highway Users Conference. Washington, D.C.: National Highway Users Conference, 1945.

Warning: These citations may not always be complete (especially for serials).