Hand, E. N. (1902). A mechanical universe. Inland printing company.
Cita Chicago Style (17a ed.)Hand, Edwy Nathan. A Mechanical Universe. [Spokane, Wash.]: Inland printing company, 1902.
Cita MLA (8a ed.)Hand, Edwy Nathan. A Mechanical Universe. Inland printing company, 1902.
Precaución: Estas citas no son 100% exactas.