APA citiranje

Campbell, W. W., & Moore, J. H. (1915). Radial Velocities of the Planetary and Irregular Nebulae.

Citação norma Chicago

Campbell, W. W., and J. H. Moore. Radial Velocities of the Planetary and Irregular Nebulae. 1915.

MLA citiranje

Campbell, W. W., and J. H. Moore. Radial Velocities of the Planetary and Irregular Nebulae. 1915.

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