APA aipamena

Williams, P., & Denney, J. (2012). Leadership excellence. Barbour Publishing Inc.

Chicago Style aipamena

Williams, Pat, and Jim Denney. Leadership Excellence. Uhrichsville, Ohio: Barbour Publishing Inc, 2012.

MLA aipamena

Williams, Pat, and Jim Denney. Leadership Excellence. Barbour Publishing Inc, 2012.