Citação norma APA

English Teaching Division. (1971). Carl Sandburg: His life, his poems, his land. United States Information Agency.

Citação norma Chicago

English Teaching Division. Carl Sandburg: His Life, His Poems, His Land. Washington, D.C: United States Information Agency, 1971.

Citação norma MLA

English Teaching Division. Carl Sandburg: His Life, His Poems, His Land. United States Information Agency, 1971.

Nota: a formatação da citação pode não corresponder 100% ao definido pela respectiva norma.