Cita APA (7a ed.)

Nordmann, C. (1904). The sun-spot period and the variations of the mean annual temperature of the earth. Governtment Printing Of.

Cita Chicago Style (17a ed.)

Nordmann, Charles. The Sun-spot Period and the Variations of the Mean Annual Temperature of the Earth. Washington: Governtment Printing Of, 1904.

Cita MLA (9a ed.)

Nordmann, Charles. The Sun-spot Period and the Variations of the Mean Annual Temperature of the Earth. Governtment Printing Of, 1904.