Cita APA

Barbuy, B., Ortolani, S., & Bica, E. L. D. (1994). NGC 6522: An intermediate metallicity globular cluster projected on the baade window.

Citación estilo Chicago

Barbuy, Beatriz, Sergio Ortolani, y Eduardo Luiz Damiani Bica. NGC 6522: An Intermediate Metallicity Globular Cluster Projected On the Baade Window. 1994.

Cita MLA

Barbuy, Beatriz, Sergio Ortolani, y Eduardo Luiz Damiani Bica. NGC 6522: An Intermediate Metallicity Globular Cluster Projected On the Baade Window. 1994.