Oates and Oates (1970:30) say this is reported by Carroll to be the same as Amarag N47 and thus Oates (1975:5-6, 368) lists it under Amurdak N47.
Harvey (2002:12) also considers Wareidbug to be the same as Amurdak, indicating that the name Woraidug (N48) (Berndt and Berndt's spelling) derives from the Bininj Gunwok term for Amurdak, Wardadjbak.
Dixon (2002:xlii) lists Wardadjbak as a variant name for Amurdag N47.
Berndt (1970 1969:12), however, indicates that Woraidbag (N48) and Amurag N47 are distinct, as does Capell (1963), and Elkin, Berndt and Berndt (1951:254-5) describe the Amarag N47 as being 'allied to the Wareidbug'. It should be noted, though, that Elkin and the Berndts are describing groups of people, rather than language per se, and Capell's data comes from Elkin, Berndt and Berndt 1951.
North-west of Oenpelli, NT (Oates & Oates 1970:30). [The Amarag] were allied to the Wareidbug, who extended inland from the Jiwadja down towards and west of Oenpelli, near Aridgin Plain on the other side of Cooper's Creek (Elkin, Berndt & Berndt 1951:254-5).
Speaker numbers were measured differently across the censuses and various other sources listed in AUSTLANG. You are encouraged to refer to the sources.
Speaker numbers for ‘NILS 2004’ and ‘2005 estimate’ come from 'Table F.3: Numbers of speakers of Australian Indigenous languages (various surveys)' in 'Appendix F NILS endangerment and absolute number results' in McConvell, Marmion and McNicol 2005, pages 198-230 (PDF, 2.5MB).