Gaya APA

Gould, S, J. (:). Time scales and the year 2000. Dlm: Conversations about the end of time.By Umberto Eco dkk.2000, Harmondsworth. . : .

Gaya MLA

Gould, Stephen, Jay. "Time scales and the year 2000. Dlm: Conversations about the end of time.By Umberto Eco dkk.2000, Harmondsworth.". : , :. Majalah.