Cita APA (7th ed.)

Smith, D. (2003). Free liunch: Easily digestable economics, served on plate.

Cita Chicago (17th ed.)

Smith, David. Free Liunch: Easily Digestable Economics, Served on Plate. London, 2003.

Cita MLA (9th ed.)

Smith, David. Free Liunch: Easily Digestable Economics, Served on Plate. 2003.