Bittel, L. R. (1968). Lo que todo supervisor debe saber. McGraw-Hill Book Company, Inc..
Chicago Style (17th ed.) CitationBittel, Lester R. Lo Que Todo Supervisor Debe Saber. Madrid, España: McGraw-Hill Book Company, Inc., 1968.
MLA (9th ed.) CitationBittel, Lester R. Lo Que Todo Supervisor Debe Saber. McGraw-Hill Book Company, Inc., 1968.