BROWN, E. W. The Motion of the Moon, 1923-1931. Monthly Notices of the Royal Astronomical Society. Červen 1933, roč. 93, čís. 8, s. 603–619. (str. 605). DOI10.1093/mnras/93.8.603.
nasa.gov
eclipse.gsfc.nasa.gov
ESPENAK, Fred; MEEUS, Jean. Five Millennium Catalog of Lunar Eclipses: -1999 to +3000 [online]. NASA Goddard Space Flight Center [cit. 2021-03-16]. Kapitola 1.2.6 Lunation number, s. 2. Dostupné online. PDF online [1]. (anglicky)