APA ציטוט

Grava, S. (2003). Urban transportation systems. New York: McGraw-Hill.

Trích dẫn kiểu Chicago

Grava, Sigurd. Urban Transportation Systems. New York: McGraw-Hill, 2003.

ציטוט MLA

Grava, Sigurd. Urban Transportation Systems. New York: McGraw-Hill, 2003.