Cita APA (7a ed.)

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

Cita Chicago Style (17a ed.)

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

Cita MLA (8a ed.)

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