APA ציטוט

Shapley, H. (1941). Galactic and Extragalactic Studies: XII. The Giant Globular Cluster 47 Tucanae and Its Long-Period Variables.

Citação norma Chicago

Shapley, Harlow. Galactic and Extragalactic Studies: XII. The Giant Globular Cluster 47 Tucanae and Its Long-Period Variables. 1941.

ציטוט MLA

Shapley, Harlow. Galactic and Extragalactic Studies: XII. The Giant Globular Cluster 47 Tucanae and Its Long-Period Variables. 1941.