Paper  bibtex   

@misc{heerwegen_heerwegen_nodate,
	title = {Heerwegen - {Psychosocial} {Value} of {Space}},
	url = {http://www.wbdg.org/design/psychspace_value.php?print=1},
	urldate = {2007-06-30TZ},
	author = {Heerwegen, Judith},
	keywords = {Lighting}
}