APA-viite (7. p.)
Hanson, R. D. (1967). The Venezuela Earthquake. July 29, 1967. American Iron and Steel Institute.
Chicago-viite (17. p.)
Hanson, Robert D. The Venezuela Earthquake. July 29, 1967. Nueva York, EUA: American Iron and Steel Institute, 1967.
MLA-viite (9. p.)
Hanson, Robert D. The Venezuela Earthquake. July 29, 1967. American Iron and Steel Institute, 1967.
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