Cita APA (7th ed.)
Hurd, M. K. (1979). Formwork for concrete (4th ed.). American Concrete Institute.
Cita Chicago (17th ed.)
Hurd, M. K. Formwork for Concrete. 4th ed. Detroit: American Concrete Institute, 1979.
Cita MLA (9th ed.)
Hurd, M. K. Formwork for Concrete. 4th ed. American Concrete Institute, 1979.
Atenció: Aquestes cites poden no estar 100% correctes.