APA-viite (7. p.)
Hawley, E. W. (1981). Herbert Hoover as secretary of commerce: Studies in New Era thought and practice. University of Iowa.
Chicago-viite (17. p.)
Hawley, Elis W. Herbert Hoover as Secretary of Commerce: Studies in New Era Thought and Practice. IOWA: University of Iowa, 1981.
MLA-viite (9. p.)
Hawley, Elis W. Herbert Hoover as Secretary of Commerce: Studies in New Era Thought and Practice. University of Iowa, 1981.
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