Griffin, R. W. (1984). Instructor's manual management. Houghton mifflin company.
Lua i Stíl Chicago (17ú heag.)Griffin, Ricky W. Instructor's Manual Management. Boston: Houghton mifflin company, 1984.
Lua MLA (9ú heag.)Griffin, Ricky W. Instructor's Manual Management. Houghton mifflin company, 1984.
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