APA (7th ed.) Citation

Nightingale, F. (1873). A sub-'note of interrogation': I, what will be our religion in 1999? [publisher not identified].

Chicago Style (17th ed.) Citation

Nightingale, Florence. A Sub-'note of Interrogation': I, What Will Be Our Religion in 1999? [London?]: [publisher not identified], 1873.

MLA (8th ed.) Citation

Nightingale, Florence. A Sub-'note of Interrogation': I, What Will Be Our Religion in 1999? [publisher not identified], 1873.