APA-referens (7:e uppl.)

(2004). Journeys fron the center of the earth: Six guided tours through Mediterranean history : risky rocks. BBC Worldwide.

Chicago-referens (17:e uppl.)

Journeys Fron the Center of the Earth: Six Guided Tours Through Mediterranean History : Risky Rocks. Australia: BBC Worldwide, 2004.

MLA-referens (8:e uppl.)

Journeys Fron the Center of the Earth: Six Guided Tours Through Mediterranean History : Risky Rocks. BBC Worldwide, 2004.

Varning: dessa hänvisningar är inte alltid fullständigt riktiga.