APA (7th ed.) Citation

Bonfield, L., Smith, R. M., & Wrightson, K. (1986). The World we have gained: Histories of population and social structure. B. Blackwell.

Chicago Style (17th ed.) Citation

Bonfield, Lloyd, Richard Michael Smith, and Keith Wrightson. The World We Have Gained: Histories of Population and Social Structure. Oxford: B. Blackwell, 1986.

MLA (9th ed.) Citation

Bonfield, Lloyd, et al. The World We Have Gained: Histories of Population and Social Structure. B. Blackwell, 1986.