Cita APA (7th ed.)
Preston, H. K. (1960). Practical prestressed concrete. McGraw-Hill.
Cita Chicago (17th ed.)
Preston, Howard Kent. Practical Prestressed Concrete. New York: McGraw-Hill, 1960.
Cita MLA (9th ed.)
Preston, Howard Kent. Practical Prestressed Concrete. McGraw-Hill, 1960.
Atenció: Aquestes cites poden no estar 100% correctes.