Cita APA (7th ed.)

Day, A. J. (1990). The annual register: A record of world events 1990. Longman.

Cita Chicago (17th ed.)

Day, Alan J. The Annual Register: A Record of World Events 1990. Essex, UK: Longman, 1990.

Cita MLA (9th ed.)

Day, Alan J. The Annual Register: A Record of World Events 1990. Longman, 1990.