Cita APA (7th ed.)

Discovery Channel (Firm) & Bell, B. (2008). Ireland (7th ed.). Apa Productions.

Cita Chicago (17th ed.)

Discovery Channel (Firm) i Brian Bell. Ireland. 7th ed. Singapore: Apa Productions, 2008.

Cita MLA (9th ed.)

Discovery Channel (Firm) i Brian Bell. Ireland. 7th ed. Apa Productions, 2008.