Cita APA

Shapley, H., & McKibben, V. (1942). Galactic and Extragalactic Studies: XV. On the Distribution of Periods for 343 Cepheids in the Small Magellanic Cloud.

Chicago Style Citation

Shapley, Harlow, i Virginia McKibben. Galactic and Extragalactic Studies: XV. On the Distribution of Periods for 343 Cepheids in the Small Magellanic Cloud. 1942.

Cita MLA

Shapley, Harlow, i Virginia McKibben. Galactic and Extragalactic Studies: XV. On the Distribution of Periods for 343 Cepheids in the Small Magellanic Cloud. 1942.