Roberts. A Political Companion to Frederick Douglass. The University Press of Kentucky.
Čikaški stil citiranja (17. izdanje)Roberts. A Political Companion to Frederick Douglass. The University Press of Kentucky.
MLA način citiranja (9. izdanje)Roberts. A Political Companion to Frederick Douglass. The University Press of Kentucky.
Upozorenje: Ovi citati možda nisu uvijek 100% točni.