$1!<7!1?!+8!@*!Y.!T2!S8!5( (B/ s - Ciulla,Joanne B.; $1!PA!Gm!_Ss ($1!Tk!Xl(B)s ($1!T+!4I!<D (B: s $1!9(!0%!\D!X((B, s, 2002)
Keywords: $1!Rx!E-!2-!KHs; $1!Ky!GD!@a!;Ds; Work ethic; Work -- Psychological aspects