APA (7th ed.) Citation

Purdue, I. P. (1961). Papers pertaining to the Confederacy. [publisher not identified].

Chicago Style (17th ed.) Citation

Purdue, Ida Pace. Papers Pertaining to the Confederacy. [Washington?]: [publisher not identified], 1961.

MLA (9th ed.) Citation

Purdue, Ida Pace. Papers Pertaining to the Confederacy. [publisher not identified], 1961.

Warning: These citations may not always be 100% accurate.