Cita APA (7th ed.)
Berkin, C. (1991). America: Yesterday and today. Scott,Foresman.
Cita Chicago (17th ed.)
Berkin, Carol. America: Yesterday and Today. Illinois: Scott,Foresman, 1991.
Cita MLA (9th ed.)
Berkin, Carol. America: Yesterday and Today. Scott,Foresman, 1991.
Atenció: Aquestes cites poden no estar 100% correctes.