APA (7th ed.) Citation

Stableford, B. M., & Langford, D. (1985). The third millennium: A history of the world, AD 2000-3000. Sidgwick & Jackson.

Chicago Style (17th ed.) Citation

Stableford, Brian M., and David Langford. The Third Millennium: A History of the World, AD 2000-3000. London: Sidgwick & Jackson, 1985.

MLA (8th ed.) Citation

Stableford, Brian M., and David Langford. The Third Millennium: A History of the World, AD 2000-3000. Sidgwick & Jackson, 1985.