Citação norma APA

Minneapolis. Public Library. Environmental Conservation Library. (1974). ECOL book catalog: Environmental conservation library. American Library Association.

Citação norma Chicago

Minneapolis. Public Library. Environmental Conservation Library. ECOL Book Catalog: Environmental Conservation Library. Chicago: American Library Association, 1974.

Citação norma MLA

Minneapolis. Public Library. Environmental Conservation Library. ECOL Book Catalog: Environmental Conservation Library. American Library Association, 1974.

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