(1985). A bibliography of American county histories / compiled by P. William Filby.
Cita Chicago (17th ed.)A Bibliography of American County Histories / Compiled by P. William Filby. 1985.
Cita MLA (9th ed.)A Bibliography of American County Histories / Compiled by P. William Filby. 1985.
Atenció: Aquestes cites poden no estar 100% correctes.