APA (7e ed.) Bronvermelding

GRAVA, S. (2002). Urban transportation systems: Choices for communities. McGraw-Hill.

Chicago (17e ed.) Bronvermelding

GRAVA, Sigurd. Urban Transportation Systems: Choices for Communities. New York: McGraw-Hill, 2002.

MLA (9e ed.) Bronvermelding

GRAVA, Sigurd. Urban Transportation Systems: Choices for Communities. McGraw-Hill, 2002.

Let op: Deze citaties zijn niet altijd 100% accuraat.