Cita APA (7a ed.)

Klotz, O. (1906). Report upon field astronomical observations and description of half-seconds pendulum aparatus. Dept. of the Interior.

Cita Chicago Style (17a ed.)

Klotz, Otto. Report upon Field Astronomical Observations and Description of Half-seconds Pendulum Aparatus. Ottawa: Dept. of the Interior, 1906.

Cita MLA (9a ed.)

Klotz, Otto. Report upon Field Astronomical Observations and Description of Half-seconds Pendulum Aparatus. Dept. of the Interior, 1906.