Cita APA (7a ed.)

Proctor, R. A. (1877). The spectroscope and its work. Society for Promoting Christian Knowledge [etc.].

Cita Chicago Style (17a ed.)

Proctor, Richard A. The Spectroscope and Its Work. London [etc.]: Society for Promoting Christian Knowledge [etc.], 1877.

Cita MLA (9a ed.)

Proctor, Richard A. The Spectroscope and Its Work. Society for Promoting Christian Knowledge [etc.], 1877.