American Concrete Institute. (1989). ACI manual of concrete practice. American Concrete Institute.
Dyfyniad Arddull ChicagoAmerican Concrete Institute. ACI Manual of Concrete Practice. Detroit, Mich: American Concrete Institute, 1989.
Dyfyniad MLAAmerican Concrete Institute. ACI Manual of Concrete Practice. American Concrete Institute, 1989.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.