Cita APA

(1989). Information Please Almanac Atlas & Yearbook 1989. Houghton Mifflin.

Chicago Style (17th ed.) Citation

Information Please Almanac Atlas & Yearbook 1989. Houghton Mifflin, 1989.

Cita MLA

Information Please Almanac Atlas & Yearbook 1989. Houghton Mifflin, 1989.

Atenció: Aquestes cites poden no estar 100% correctes.