Лоренс Дејл Бел — разлика између измена

* {{Cite book| last = Capps| first = Randall| authorlink = | coauthors = Paul Clermont| title = Entrepreneurship and innovation in Québec: how the province became a world| url = | year = 2004| publisher = Greenwood Publishing Group| location = | language = {{en|ref=harv}}