@book{1668,
	author = {Logan, Kenneth J},
	title = {Fluency disorders},
	publisher = {Plural Publishing,},
	year = {2015.},
	address = {San Diego:},
	url = {https://books.google.com.pk/books?id=emftQwAACAAJ&dq=9781597564076&hl=en&sa=X&ved=0ahUKEwifoqrJo-TbAhVIKsAKHR1GCZYQ6AEIJDAA}
}