5 Monkeys

I don't remember when I first heard this story, but it was back in the early 90s, at least. I've been trying to trace it (in a desultory fashion), and the closest I've come with a very quick search is a reference from this page:

http://wiki.answers.com/Q/Did_the_monkey_banana_and_water_sp...

... to the following articles:

  Stephenson, G. R. (1967).
  Cultural acquisition of a specific learned response among rhesus monkeys.
  In: Starek, D., Schneider, R., and Kuhn, H. J. (eds.),
  Progress in Primatology, Stuttgart: Fischer, pp. 279-288.

  mentioned in:
  Galef, B. G., Jr. (1976).
  Social Transmission of Acquired Behavior: A Discussion of Tradition and Social Learning in Vertebrates.
  In: Rosenblatt, J.S., Hinde, R.A., Shaw, E. and Beer, C. (eds.),
  Advances in the study of behavior, Vol. 6, New York: Academic Press, pp. 87-88

This search:

http://www.google.co.uk/#hl=en&q=Five+monkeys+cage+water

... gives over a million results. I haven't checked them all. Does anyone have any better references?