APA (7th ed.) Citation

Zech, G. (1968). The determination of the mass of the earth [and] moon system by the dynamical method from observations of Eros. Braun.

Chicago Style (17th ed.) Citation

Zech, G. The Determination of the Mass of the Earth [and] Moon System by the Dynamical Method from Observations of Eros. Karlsruhe: Braun, 1968.

MLA (9th ed.) Citation

Zech, G. The Determination of the Mass of the Earth [and] Moon System by the Dynamical Method from Observations of Eros. Braun, 1968.

Warning: These citations may not always be 100% accurate.