Cita APA

Clarke, A. C., & National Geographic Society. (1994). Front line of discovery: Science on the Brink of tomorrow. Washington: National Geographic Society.

Citación estilo Chicago

Clarke, Arthur Charles, y National Geographic Society. Front Line of Discovery: Science On the Brink of Tomorrow. Washington: National Geographic Society, 1994.

Cita MLA

Clarke, Arthur Charles, y National Geographic Society. Front Line of Discovery: Science On the Brink of Tomorrow. Washington: National Geographic Society, 1994.