You know, you make an excellent point there, but the real question should be is where in the world do cocktail napkins get their trivia facts from?

If you don't want to really cite a cocktail napkin, type the fact in google and see if you can find the origin of the statistic/fact/trivia. Usually a fact like that will be printed (exactly as it was on the napkin) somewhere else.

if you do find some sort of origin of the fact or at least a site talking about it, cite that instead of the napkin. I know it's total fudgery but even the internet has more respect than a cocktail napkin.

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Spring 2009: Managerial Accounting, Business Cal, Statistics