Não informado. (1960). Quarterly Journal of the Royal Astronomical Society. Blackwell Scientific Publications.
Chicago-referens (17:e uppl.)Não informado. Quarterly Journal of the Royal Astronomical Society. London: Blackwell Scientific Publications, 1960.
MLA-referens (8:e uppl.)Não informado. Quarterly Journal of the Royal Astronomical Society. Blackwell Scientific Publications, 1960.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.