Cita APA (7th ed.)

Christensen, C., & Brill, M. (2011). The power within: By Charles "Zan" Christensen & Mark Brill. Northwest.

Cita Chicago (17th ed.)

Christensen, Charles, i Mark Brill. The Power Within: By Charles "Zan" Christensen & Mark Brill. Seattle, Wash.: Northwest, 2011.

Cita MLA (8th ed.)

Christensen, Charles, i Mark Brill. The Power Within: By Charles "Zan" Christensen & Mark Brill. Northwest, 2011.