Henderson, J. M. (1958). The Efficiency of the Coal Industry: An Application of Linear Programming. Harvard University Press.
Lua i Stíl Chicago (17ú heag.)Henderson, James M. The Efficiency of the Coal Industry: An Application of Linear Programming. Cambridge: Harvard University Press, 1958.
Lua MLA (9ú heag.)Henderson, James M. The Efficiency of the Coal Industry: An Application of Linear Programming. Harvard University Press, 1958.
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