Cita APA (7th ed.)
Hanson, R. D. (1967). The Venezuela Earthquake. July 29, 1967. American Iron and Steel Institute.
Cita Chicago (17th ed.)
Hanson, Robert D. The Venezuela Earthquake. July 29, 1967. Nueva York, EUA: American Iron and Steel Institute, 1967.
Cita MLA (9th ed.)
Hanson, Robert D. The Venezuela Earthquake. July 29, 1967. American Iron and Steel Institute, 1967.
Atenció: Aquestes cites poden no estar 100% correctes.