@book{13506,
	author = {Skoog, Douglas A. and Holler, F. James},
	title = {Principles of instrumental analysis},
	publisher = {Cengage Learning},
	year = {2014, 2018},
	address = {New Delhi},
	edition = {6th ed.},
	note = {In 2018 reprint edition the total page no is 1029, which includes index pages from 1000 to 1029}
}