APA (7th ed.) Citation

Proctor, B. W., Proctor, A. B., University of Chicago. Library. Codex Ms. 633, & University of Chicago. Library. Special Collections Research Center. (1844). Letters to Robert Browning and Elizabeth Barrett-Browning.

Chicago Style (17th ed.) Citation

Proctor, Bryan Waller, Anne B. Proctor, University of Chicago. Library. Codex Ms. 633, and University of Chicago. Library. Special Collections Research Center. Letters to Robert Browning and Elizabeth Barrett-Browning. 1844.

MLA (8th ed.) Citation

Proctor, Bryan Waller, et al. Letters to Robert Browning and Elizabeth Barrett-Browning. 1844.