APA način citiranja (7. izdanje)
Higgins, C., & Coombs, O. (1976). Some time ago: A historical portrait of black americans from 1850-1950. Anchor Press.
Čikaški stil citiranja (17. izdanje)
Higgins, Chester, i Orde Coombs. Some Time Ago: A Historical Portrait of Black Americans from 1850-1950. New York: Anchor Press, 1976.
MLA način citiranja (9. izdanje)
Higgins, Chester, i Orde Coombs. Some Time Ago: A Historical Portrait of Black Americans from 1850-1950. Anchor Press, 1976.
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