APA (7th ed.) Citation

Macadam, I. S., Grindrod, M., & Boas, A. (1969). The annual register: World events in 1968. Longmans.

Chicago Style (17th ed.) Citation

Macadam, Ivison S., Muriel Grindrod, and Ann Boas. The Annual Register: World Events in 1968. London, [England]: Longmans, 1969.

MLA (9th ed.) Citation

Macadam, Ivison S., et al. The Annual Register: World Events in 1968. Longmans, 1969.