एपीए उद्धरण

Drexler, E. K. (1990). Engines of creation. Fourth Estate.

शिकागो स्टाइल उद्धरण

Drexler, Eric K. Engines of Creation. London: Fourth Estate, 1990.

एमएलए उद्धरण

Drexler, Eric K. Engines of Creation. Fourth Estate, 1990.