Grønnum (1998:99-100) Grønnum, Nina (1998), "Illustrations of the IPA: Danish", Journal of the International Phonetic Association, 28 (1 & 2): 99-105, doi:10.1017/s0025100300006290
Grønnum (1998:104) Grønnum, Nina (1998), "Illustrations of the IPA: Danish", Journal of the International Phonetic Association, 28 (1 & 2): 99-105, doi:10.1017/s0025100300006290
Torp (2001:78) Torp, Arne (2001), "Retroflex consonants and dorsal /r/: mutually excluding innovations? On the diffusion of dorsal /r/ in Scandinavian", i van de Velde, Hans; van Hout, Roeland (red.), 'r-atics, Brussels: Etudes & Travaux, s. 75-90, ISSN0777-3692
Bauer et al. (1980:?), citeret i Ladefoged & Maddieson (1996:144): "Kun i meget distinkt tale – som fra det kongelige teaters scene – får vi en hæmmelyd." Bauer, Laurie; Dienhart, John M.; Hartvigson, Hans H.; Jakobsen, Leif Kvistgaard (1980), American English Pronunciation: Supplement, Comparison with Danish., Copenhagen: Gyldendalske Boghandel, OCLC54869978 Ladefoged, Peter; Maddieson, Ian (1996). The Sounds of the World's Languages. Oxford: Blackwell. ISBN978-0-631-19815-4.
Torp (2001:78) Torp, Arne (2001), "Retroflex consonants and dorsal /r/: mutually excluding innovations? On the diffusion of dorsal /r/ in Scandinavian", i van de Velde, Hans; van Hout, Roeland (red.), 'r-atics, Brussels: Etudes & Travaux, s. 75-90, ISSN0777-3692