APA引文

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引文

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

警告：这些引文格式不一定是100％准确.