APA (7e ed.) Bronvermelding
Hay,William W. (1977). An introduction to transportation engineering (2nd ed.). Robert E.Krieger pub..
Chicago (17e ed.) Bronvermelding
Hay,William W. An Introduction to Transportation Engineering. 2nd ed. New York: Robert E.Krieger pub., 1977.
MLA (9e ed.) Bronvermelding
Hay,William W. An Introduction to Transportation Engineering. 2nd ed. Robert E.Krieger pub., 1977.
Let op: Deze citaties zijn niet altijd 100% accuraat.