Cita APA (7th ed.)

Sandburg, C. Prayers of Steel: Carl Sandburg. The Midwest.(1979).

Cita Chicago (17th ed.)

Sandburg, Carl. "Prayers of Steel: Carl Sandburg." The Midwest.(1979) .

Cita MLA (8th ed.)

Sandburg, Carl. "Prayers of Steel: Carl Sandburg." The Midwest.(1979), .