(1989). Information Please Almanac Atlas & Yearbook 1989. Houghton Mifflin.
Chicagoスタイル(17版)引用形式Information Please Almanac Atlas & Yearbook 1989. Houghton Mifflin, 1989.
MLA(8版)引用形式Information Please Almanac Atlas & Yearbook 1989. Houghton Mifflin, 1989.
警告: この引用は必ずしも正確ではありません.