LUSK, H. F. (1966). Business law: Principles and cases. Richard D.Irwin.
Lua i Stíl Chicago (17ú heag.)LUSK, Harold F. Business Law: Principles and Cases. Illinois: Richard D.Irwin, 1966.
Lua MLA (9ú heag.)LUSK, Harold F. Business Law: Principles and Cases. Richard D.Irwin, 1966.
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