Cita APA (7th ed.)
Sharp, D. R. (1970). Concrete in highway engineering. Pergamon Pr.
Cita Chicago (17th ed.)
Sharp, Douglas Raymond. Concrete in Highway Engineering. Oxford: Pergamon Pr, 1970.
Cita MLA (9th ed.)
Sharp, Douglas Raymond. Concrete in Highway Engineering. Pergamon Pr, 1970.
Atenció: Aquestes cites poden no estar 100% correctes.