Citazione Stile APA (7a Edizione)

Day, A. J., & Hoffman, V. (1989). The annual register: A record of world events, 1988. Longman.

Citazione stile Chigago Style (17a edizione)

Day, Alan J., e Verena Hoffman. The Annual Register: A Record of World Events, 1988. Essex, England: Longman, 1989.

Citatione MLA (9a ed.)

Day, Alan J., e Verena Hoffman. The Annual Register: A Record of World Events, 1988. Longman, 1989.