Cita APA (7a ed.)

Greenstein, S. M. (1998). Universal service in the digital age: The commercialization and geography of US Internet access. National Bureau of Economic Research.

Cita Chicago Style (17a ed.)

Greenstein, Shane M. Universal Service in the Digital Age: The Commercialization and Geography of US Internet Access. Cambridge, MA: National Bureau of Economic Research, 1998.

Cita MLA (9a ed.)

Greenstein, Shane M. Universal Service in the Digital Age: The Commercialization and Geography of US Internet Access. National Bureau of Economic Research, 1998.