Ramsey, A. S. (1992). Statics. Modern Book Centre.
Cita Chicago (17th ed.)Ramsey, A. S. Statics. Cambridge: Modern Book Centre, 1992.
Cita MLA (9th ed.)Ramsey, A. S. Statics. Modern Book Centre, 1992.
Atenció: Aquestes cites poden no estar 100% correctes.