@book{9478,
	author = {Singh, Y. K. and Sharma, T.K.},
	title = {Encyclopaedia of educational technology /},
	publisher = {A P H Publishing Corporation},
	year = {2008},
	address = {New Delhi},
	note = {This book published in 3 vols & set price is 1995.00, includes bibliographical references and index}
}