Cita APA (7a ed.)

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

Cita Chicago Style (17a ed.)

Heald, Gordon, y Robert J. Wybrow. The Gallup Survey of Britain. London [u.a.]: Croom Helm, 1986.

Cita MLA (9a ed.)

Heald, Gordon, y Robert J. Wybrow. The Gallup Survey of Britain. Croom Helm, 1986.