APA ציטוט

Pegrum, D. F. (1968). Transportation economics and public policy. Richard D. Irwin.

Chicago Style (17th ed.) Citation

Pegrum, Dudley F. Transportation Economics and Public Policy. Richard D. Irwin, 1968.

ציטוט MLA

Pegrum, Dudley F. Transportation Economics and Public Policy. Richard D. Irwin, 1968.