Brockman, J. (2003). next fifty years: Science in the first half of the twenty first century. Phonix.
Chicago Style aipamenaBrockman, John. Next Fifty Years: Science in the First Half of the Twenty First Century. London: Phonix, 2003.
MLA aipamenaBrockman, John. Next Fifty Years: Science in the First Half of the Twenty First Century. Phonix, 2003.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.