Gaya APA

Gale, Stephen J.. (1998). Are Road User Charges Competitive ? . : s.n..

Gaya Chicago

Gale, Stephen J.. Are Road User Charges Competitive ?. : s.n., 1998. Computer Software.

Gaya MLA

Gale, Stephen J.. Are Road User Charges Competitive ?. : s.n., 1998. Computer Software.

Gaya Turabian

Gale, Stephen J.. Are Road User Charges Competitive ?. : s.n., 1998. Computer Software.