Cita APA (7a ed.)

Auerbach, F. (1893). The Absolute measurement of hardness. Government Printing Of.

Cita Chicago Style (17a ed.)

Auerbach, Felix. The Absolute Measurement of Hardness. Washington: Government Printing Of, 1893.

Cita MLA (9a ed.)

Auerbach, Felix. The Absolute Measurement of Hardness. Government Printing Of, 1893.