Cita APA (7a ed.)

Creak, E. W. (1896). The General bearings of magnetic observation. Government Printing Of.

Cita Chicago Style (17a ed.)

Creak, Ettrick W. The General Bearings of Magnetic Observation. Washington: Government Printing Of, 1896.

Cita MLA (9a ed.)

Creak, Ettrick W. The General Bearings of Magnetic Observation. Government Printing Of, 1896.