Tohutoro APA (7th ed.)
Hybels, b. (2002). Courageous leadership. Grand Rapids.
Tohutoru Kātū Chicago (17th ed.)
Hybels, bill. Courageous Leadership. Zondervan: Grand Rapids, 2002.
Tohutoro MLA (9th ed.)
Hybels, bill. Courageous Leadership. Grand Rapids, 2002.
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