Gaya APA

Yukl, G, A., Gardner, W, L, I. (2020). Leadership in Organizations : Global Edition (Ninth Ed Global Ed). United Kingdom: Pearson Education Limited.

Gaya MLA

Yukl, Gary, A., Gardner, William, L, III. "Leadership in Organizations : Global Edition". Ninth Ed Global Ed United Kingdom: Pearson Education Limited, 2020. MP.