@book{55616,
	author = {Marston, Louise,},
	title = {Introductory statistics for health and nursing using SPSS},
	publisher = {SAGE,},
	year = {2010.},
	address = {Los Angeles, [Calif.] ;},
	url = {https://sk.sagepub.com/books/introductory-statistics-for-health-and-nursing-using-spss}
}