@book{9001,
	author = {Clark, John },
	title = {An introduction to phonetics and phonology},
	publisher = {Blackwell Pub,},
	year = {2007.},
	address = {Oxford : },
	url = {https://www.amazon.com/Introduction-Phonetics-Phonology-John-Clark/dp/1405130830?asin=1405130830&revisionId=&format=4&depth=1}
}