Gaya APA
Grava, Sigurd. (2003).
Urban transportation systems : choice for communities .
United States Of America:
McGraw-Hill.
Gaya Chicago
Grava, Sigurd.
Urban transportation systems : choice for communities.
United States Of America:
McGraw-Hill,
2003.
Text.
Gaya MLA
Grava, Sigurd.
Urban transportation systems : choice for communities.
United States Of America:
McGraw-Hill,
2003.
Text.
Gaya Turabian
Grava, Sigurd.
Urban transportation systems : choice for communities.
United States Of America:
McGraw-Hill,
2003.
Print.