APA(7版)引用形式
Higgins, C., & Coombs, O. (1976). Some time ago: A historical portrait of black americans from 1850-1950. Anchor Press.
Chicagoスタイル(17版)引用形式
Higgins, Chester, , Orde Coombs. Some Time Ago: A Historical Portrait of Black Americans from 1850-1950. New York: Anchor Press, 1976.
MLA(9版)引用形式
Higgins, Chester, , Orde Coombs. Some Time Ago: A Historical Portrait of Black Americans from 1850-1950. Anchor Press, 1976.
警告: この引用は必ずしも正確ではありません.