Gaya APA
Yukl, G. (1990).
Skills for managers and leaders : text, cases and exercises .
Englewood Cliffs, NJ:
Prentice Hall.
Gaya MLA
Yukl, Gary.
"Skills for managers and leaders : text, cases and exercises".
Englewood Cliffs, NJ:
Prentice Hall,
1990.
Text.