@book{1557,
	author = {Loiselle, Carmen G.},
	title = {Canadian essentials of nursing research},
	publisher = {Lippincott Williams & Wilkins,},
	year = {2007.},
	address = {Philadelphia :},
	edition = {2nd ed.},
	url = {https://books.google.com.pk/books?id=K9BbPgAACAAJ&dq=9780781784160&hl=en&sa=X&ved=2ahUKEwiiu_OCrtv1AhX3DmMBHTU0DisQ6AF6BAgCEAI}
}