APA (7th ed.) Citation

Gallup International, Inc, Heald, G., & Wybrow, R. (1986). The Gallup survey of Britain, 1985. Croom Helm.

Chicago Style (17th ed.) Citation

Gallup International, Inc, Gordon Heald, and Robert Wybrow. The Gallup Survey of Britain, 1985. London: Croom Helm, 1986.

MLA (9th ed.) Citation

Gallup International, Inc, et al. The Gallup Survey of Britain, 1985. Croom Helm, 1986.