एपीए उद्धरण

Brockman, J. (2003). next fifty years: Science in the first half of the twenty first century. Phonix.

शिकागो स्टाइल उद्धरण

Brockman, John. Next Fifty Years: Science in the First Half of the Twenty First Century. London: Phonix, 2003.

एमएलए उद्धरण

Brockman, John. Next Fifty Years: Science in the First Half of the Twenty First Century. Phonix, 2003.