Cita APA (7a ed.)

Grady, S.. (1998). Virtual reality: Computers mimic the physical world. Facts on file.

Cita Chicago Style (17a ed.)

Grady, Sean. Virtual Reality: Computers Mimic the Physical World. New York, NY: Facts on file, 1998.

Cita MLA (9a ed.)

Grady, Sean. Virtual Reality: Computers Mimic the Physical World. Facts on file, 1998.