Cita APA (7th ed.)

Portland Cement Association, C., & Portland Cement Association. The design and construction of concrete pavements. Portland Cement Co., [c1930?].

Cita Chicago (17th ed.)

Portland Cement Association, Chicago, i Portland Cement Association. The Design and Construction of Concrete Pavements. [Chicago]: Portland Cement Co., [c1930?].

Cita MLA (9th ed.)

Portland Cement Association, Chicago, i Portland Cement Association. The Design and Construction of Concrete Pavements. Portland Cement Co., [c1930?].

Atenció: Aquestes cites poden no estar 100% correctes.