Nowell, D., & Hills, D. (1989). HERTZIAN CONTACT OF GROUND SURFACES.
Cita Chicago (17th ed.)Nowell, D., i D. Hills. HERTZIAN CONTACT OF GROUND SURFACES. 1989.
Cita MLA (9th ed.)Nowell, D., i D. Hills. HERTZIAN CONTACT OF GROUND SURFACES. 1989.
Atenció: Aquestes cites poden no estar 100% correctes.