Skilton, St J. "The Survey of Scottish Gaelic in Australia and New Zealand"Архив на оригинала от 2012-04-23 в Wayback Machine., p. 300, quoting a respondent to his survey: "'Bill' = 'bile' = 'lip or mouth' and 'abong' is from 'abhainn' = 'river' with a parasitic 'G' added. A billabong probably has a mouth shape of sorts being at a bend in a river." University of Fribourg, Switzerland, June 2004. Last Посетен на 15 март 2008.
Skilton, St J. "The Survey of Scottish Gaelic in Australia and New Zealand"Архив на оригинала от 2012-04-23 в Wayback Machine., p. 300, quoting a respondent to his survey: "'Bill' = 'bile' = 'lip or mouth' and 'abong' is from 'abhainn' = 'river' with a parasitic 'G' added. A billabong probably has a mouth shape of sorts being at a bend in a river." University of Fribourg, Switzerland, June 2004. Last Посетен на 15 март 2008.