Schade, L., & Helper, H. R. (1860). A book for the "impending crisis"!: Appeal to the common sense and patriotism of the people of the United States. "Helperism" annihilated! The "irrepressible conflict" and its consequences! Little, Morris.
Čikaški stil citiranja (17. izdanje)Schade, Louis, i Hinton Rowan Helper. A Book for the "Impending Crisis"!: Appeal to the Common Sense and Patriotism of the People of the United States. "Helperism" Annihilated! The "Irrepressible Conflict" and Its Consequences! Washington, D.C.: Little, Morris, 1860.
MLA način citiranja (8. izdanje)Schade, Louis, i Hinton Rowan Helper. A Book for the "Impending Crisis"!: Appeal to the Common Sense and Patriotism of the People of the United States. "Helperism" Annihilated! The "Irrepressible Conflict" and Its Consequences! Little, Morris, 1860.