Dyfyniad APA

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

Dyfyniad Arddull Chicago

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

Dyfyniad MLA

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

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.