Sterne, T. E., & Campbell, L. (1937). Changes of Period in Variable Stars of Long Period.
Chicago Style CitationSterne, T. E., and L. Campbell. Changes of Period in Variable Stars of Long Period. 1937.
MLA CitationSterne, T. E., and L. Campbell. Changes of Period in Variable Stars of Long Period. 1937.
Warning: These citations may not always be 100% accurate.