APA-ийн эшлэл(7 дахь хэвлэлт)

Hawley, E. W. (1981). Herbert Hoover as secretary of commerce: Studies in New Era thought and practice. University of Iowa.

Чикаго-гийн эшлэл (17 дахь хэвлэлт)

Hawley, Elis W. Herbert Hoover as Secretary of Commerce: Studies in New Era Thought and Practice. IOWA: University of Iowa, 1981.

MLA -ийн эшлэл (9 дэх хэвлэлт)

Hawley, Elis W. Herbert Hoover as Secretary of Commerce: Studies in New Era Thought and Practice. University of Iowa, 1981.