@book{17,
	author = {Pagano, Marcello.},
	title = {Principles of Biostatistics},
	publisher = { Cengage:},
	year = {2008.},
	address = { India ;},
	edition = {2nd ed.},
	url = {https://www.amazon.com/Principles-Biostatistics-CD-Pagano-Al/dp/8131502112}
}