APA (7th ed.) Citation

Bidelman, W. P., Kron, G. E., & Herbig, G. H. (1956). Spectral classification of the brighter stars of the praesepe cluster. [Selbstverl.].

Chicago Style (17th ed.) Citation

Bidelman, William Pendry, Gerald E. Kron, and George H. Herbig. Spectral Classification of the Brighter Stars of the Praesepe Cluster. Mount Hamilton, Calif: [Selbstverl.], 1956.

MLA (9th ed.) Citation

Bidelman, William Pendry, et al. Spectral Classification of the Brighter Stars of the Praesepe Cluster. [Selbstverl.], 1956.