Northwestern University (Evanston, Ill.). Transportation Center, & Ferguson , A. R. (1961). The Economic value of the United States merchant marine. Transportation Center at Northwestern University.
Citace podle Chicago (17th ed.)Northwestern University (Evanston, Ill.). Transportation Center, a Allen Richmond Ferguson. The Economic Value of the United States Merchant Marine. Evanston, Ill.: Transportation Center at Northwestern University, 1961.
Citace podle MLA (8th ed.)Northwestern University (Evanston, Ill.). Transportation Center, a Allen Richmond Ferguson. The Economic Value of the United States Merchant Marine. Transportation Center at Northwestern University, 1961.
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