APA (7th ed.) Citation

Bernhard, R. K. (1939). Highway investigation by means of induced vibrations. Pennsylvania State College.

Chicago Style (17th ed.) Citation

Bernhard, Rudolf Karl. Highway Investigation by Means of Induced Vibrations. State College, Pa: Pennsylvania State College, 1939.

MLA (9th ed.) Citation

Bernhard, Rudolf Karl. Highway Investigation by Means of Induced Vibrations. Pennsylvania State College, 1939.