Cita APA (7a ed.)
(1990). World Topics Year Book 1990: <A> Review of the Events of 1989 (1. ed.). United Educators.
Cita Chicago Style (17a ed.)
World Topics Year Book 1990: <A> Review of the Events of 1989. 1. ed. Lake Bluff: United Educators, 1990.
Cita MLA (9a ed.)
World Topics Year Book 1990: <A> Review of the Events of 1989. 1. ed. United Educators, 1990.
Precaución: Estas citas no son 100% exactas.