Percy, Carol. 2001. “The
social symbolism of contractions and colloquialisms in
contemporary accounts of Dr. Samuel Johnson:
Bozzy, Piozzi, and the authority of intimacy”.
Historical Sociolinguistics and Soiciohistorial Linguistics.
(http://www.let.leidenuniv.nl/hsl_shl
-> Contents -> Articles). (provide your date of logon;
sample:
13-03-07.)