Lusk, H. F. (1966). Business LawPrinciples and CasesHarold F. Lusk. Irwin.
Lua i Stíl Chicago (17ú heag.)Lusk, Harold F. Business LawPrinciples and CasesHarold F. Lusk. Irwin, 1966.
Lua MLA (8ú heag.)Lusk, Harold F. Business LawPrinciples and CasesHarold F. Lusk. Irwin, 1966.
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