Cita APA (7a ed.)

Elkin, W. L. (1887). Determination of the relative positions of the principal stars in the group of the Pleiades. The Observatory.

Cita Chicago Style (17a ed.)

Elkin, William Lewis. Determination of the Relative Positions of the Principal Stars in the Group of the Pleiades. New Haven: The Observatory, 1887.

Cita MLA (9a ed.)

Elkin, William Lewis. Determination of the Relative Positions of the Principal Stars in the Group of the Pleiades. The Observatory, 1887.