@book{21587,
	author = {Roberts, Colin H. and Skeat, T. C.},
	title = {The birth of the codex /},
	publisher = {Published for the British Academy by the Oxford University Press,},
	year = {c1987.},
	address = {London ;},
	note = {Rev. and enlarged ed. of: The codex. 1954.},
	url = {http://www.loc.gov/catdir/enhancements/fy0637/84147512-d.html}
}