“…Abbi (1995), Austin (1986), Brenzinger (1997), Bunte and Kendall (1981), Campbell (1994), Campbell and Muntzel (1989), Clyne (1992), Cook (1989), Craig (1997), Dalton et al (1995), Denison (1977), Dorian (1973Dorian ( , 1978Dorian ( , 1981, Dressier (1972Dressier ( , 1981, Elmendorf (1981), Hamp (1989), Hill (1973Hill ( , 1978Hill ( , 1983Hill ( , 1989, Hill and Hill (1977, Huffines (1989), Jones (1998), Kapanga (1998), Kieffer (1977), Ruth King (1989), Maandi (1989), McGregor (2002), Miller (1971), Mithun (1989), Mougeon and Beniak (1989), Myers-Scotton (1998), Schmidt (1985aSchmidt ( , 1985b, Suwilai (1998), Allan R. Taylor (1989), Trudgill (1978), Tsitsipis (1989), Vakhtin (1998), and Voegelin and Voegelin (1977). Some of these studies are detailed, while others are sketchy.…”