Gaya APA
CHAPMAN, E, N., O'NEIL, S, L. (2000).
Leadership: (3rd ed.).
Upper Saddle River, New Jersey:
Prentice Hall.
Gaya MLA
CHAPMAN, Elwood, N.., O'NEIL, Sharon, Lund.
"Leadership:".
3rd ed.
Upper Saddle River, New Jersey:
Prentice Hall,
2000.
Buku.