APA (7th ed.) Citation

Nightingale, F., Darche, L., & Hughes, A. (1893). [Notes written in pencil].

Chicago Style (17th ed.) Citation

Nightingale, Florence, Louise Darche, and Amy Hughes. [Notes Written in Pencil]. 1893.

MLA (8th ed.) Citation

Nightingale, Florence, et al. [Notes Written in Pencil]. 1893.