Não informado. (1970). AAVSO Circular. American Association of Variable Star Observers.
Chicago Style (17th ed.) CitationNão informado. AAVSO Circular. Cambridge, Mass: American Association of Variable Star Observers, 1970.
MLA (8th ed.) CitationNão informado. AAVSO Circular. American Association of Variable Star Observers, 1970.
Warning: These citations may not always be 100% accurate.