Cita APA (7a ed.)

Wilsing, J., & Gore, H. J. (1890). Determination of the density of the Earth by means of a pendulum principle. Government Printing Office.

Cita Chicago Style (17a ed.)

Wilsing, J., y Howard J. Gore. Determination of the Density of the Earth by Means of a Pendulum Principle. Washington: Government Printing Office, 1890.

Cita MLA (9a ed.)

Wilsing, J., y Howard J. Gore. Determination of the Density of the Earth by Means of a Pendulum Principle. Government Printing Office, 1890.