Cita APA (7a ed.)

Portland Cement Association. (1951). Concrete Masonry Handbook For Architects, Engineers, Builders.

Cita Chicago Style (17a ed.)

Portland Cement Association. Concrete Masonry Handbook For Architects, Engineers, Builders. USA, Chicago, Illinois, 1951.

Cita MLA (9a ed.)

Portland Cement Association. Concrete Masonry Handbook For Architects, Engineers, Builders. 1951.