HOEFFDING, Wassily. A Class of Statistics with Asymptotically Normal Distribution.
Baltimore: Institute of Mathematical Statistics, 1948. First edition.

(Kotz & Johnson: Breakthroughs in Statistics, Vol. I, pp. 299). 

In: The Annals of Mathematical Statistics, Volume 19, Number 3, pp. 293-325. The complete issue offered in original printed wrappers: fine.