APA (7th ed.) Citation

Spear, D. N. (1961). Bibliography of American directories through 1860. American Antiquarian Society.

Chicago Style (17th ed.) Citation

Spear, Dorothea N. Bibliography of American Directories Through 1860. Worcester, Mass.: American Antiquarian Society, 1961.

MLA (8th ed.) Citation

Spear, Dorothea N. Bibliography of American Directories Through 1860. American Antiquarian Society, 1961.