Shapley, H., & Nail, V. M. (1952). Magellanic Clouds: IV. On the Period Frequency Anomalies.
Citação norma ChicagoShapley, Harlow, and Virginia McKibben Nail. Magellanic Clouds: IV. On the Period Frequency Anomalies. 1952.
MLA CitationShapley, Harlow, and Virginia McKibben Nail. Magellanic Clouds: IV. On the Period Frequency Anomalies. 1952.
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