Cita APA (7th ed.)

Wallsten, S. J. (2001). Ringing in the 20th century: The effects of state monopolies, private ownership, and operating licenses on telecommunications in Europe, 1892-1914. World Bank.

Cita Chicago (17th ed.)

Wallsten, Scott J. Ringing in the 20th Century: The Effects of State Monopolies, Private Ownership, and Operating Licenses on Telecommunications in Europe, 1892-1914. Washington, D.C: World Bank, 2001.

Cita MLA (9th ed.)

Wallsten, Scott J. Ringing in the 20th Century: The Effects of State Monopolies, Private Ownership, and Operating Licenses on Telecommunications in Europe, 1892-1914. World Bank, 2001.