Cita APA (7th ed.)

Portland Cement Association. (1976). Guide to successful street paving. Portland Cement Association.

Cita Chicago (17th ed.)

Portland Cement Association. Guide to Successful Street Paving. Skokie, Ill.: Portland Cement Association, 1976.

Cita MLA (8th ed.)

Portland Cement Association. Guide to Successful Street Paving. Portland Cement Association, 1976.

Atenció: Aquestes cites poden no estar 100% correctes.