Cita APA (7th ed.)
American concrete institute 55 year index 1905-1959 / American Concrete Institute: A C I Pub 624.1834 An512.
Cita Chicago (17th ed.)
American Concrete Institute 55 Year Index 1905-1959 / American Concrete Institute: A C I Pub 624.1834 An512.
Cita MLA (9th ed.)
American Concrete Institute 55 Year Index 1905-1959 / American Concrete Institute: A C I Pub 624.1834 An512.
Atenció: Aquestes cites poden no estar 100% correctes.