:"It is silly to say that the moon is made of green cheese."<ref name=greencheese>Gardner, Gilson (1907) "Why is a Joke Funny?" Putnam's Magazine, [http://books.google.com/books?vid=0FpJA91aGz6m10unt60lPyx&id=ZWYCAAAAIAAJ&pg=PA56&lpg=PA56&dq=%22the+moon+is+made+of+green+cheese%22&as_brr=1&ie=ISO-8859-1#PPA56,M1 p. 56]</ref> | :"It is silly to say that the moon is made of green cheese."<ref name=greencheese>Gardner, Gilson (1907) "Why is a Joke Funny?" Putnam's Magazine, [http://books.google.com/books?vid=0FpJA91aGz6m10unt60lPyx&id=ZWYCAAAAIAAJ&pg=PA56&lpg=PA56&dq=%22the+moon+is+made+of+green+cheese%22&as_brr=1&ie=ISO-8859-1#PPA56,M1 p. 56]</ref> |