Cita APA (7a ed.)

Lockyer, N. (1912). The Spectrum of Comet Brooks (1900 c). Harrison and sons, printers.

Cita Chicago Style (17a ed.)

Lockyer, Norman. The Spectrum of Comet Brooks (1900 C). [London: Harrison and sons, printers, 1912.

Cita MLA (9a ed.)

Lockyer, Norman. The Spectrum of Comet Brooks (1900 C). Harrison and sons, printers, 1912.