Παραπομπή σε μορφή APA (7η εκδ.)

Davies, P. C. W. (2010). The eerie silence: Are we alone in the universe? Allen Lane an imprint of Penguin Books.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Davies, Paul Charles William. The Eerie Silence: Are We Alone in the Universe? London: Allen Lane an imprint of Penguin Books, 2010.

Παραπομπή σε μορφή MLA (8th εκδ.)

Davies, Paul Charles William. The Eerie Silence: Are We Alone in the Universe? Allen Lane an imprint of Penguin Books, 2010.