 @online {_images_2015,
	title = {Images de l{\textquoteright}Ouest am{\'e}ricain {\textendash} {\guillemotleft} The four great surveys {\guillemotright}},
	journal = {Gallica, le blog},
	year = {2015},
	month = {2015/03/04},
	url = {http://blog.bnf.fr/gallica/index.php/2015/03/04/images-de-louest-americain-the-four-great-surveys/},
	author = {Olivier Loiseaux}
}
