APA aipamena

Ziglar, Z. (2011). Better than Good. Jaico.

Chicago Style aipamena

Ziglar, Zig. Better than Good. Jaico, 2011.

MLA aipamena

Ziglar, Zig. Better than Good. Jaico, 2011.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.