Esling, J. H. (1978). Voice quality in Edinburgh: A sociolinguistic and phonetic study.
Chicago-viite (17. p.)Esling, John Henry. Voice Quality in Edinburgh: A Sociolinguistic and Phonetic Study. 1978.
MLA-viite (8. p.)Esling, John Henry. Voice Quality in Edinburgh: A Sociolinguistic and Phonetic Study. 1978.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.