Zipf-Mandelbrot distribution citation

Question

I am using the Zipf-Mandelbrot distribution in my work according to its definition on wikipedia: http://en.wikipedia.org/wiki/Zipf%E2%80%93Mandelbrot_law. I would like to obtain the citation of the paper or the book that introduce it.

Answer 1

To follow up on onestop's response, and save other readers the time of parsing the wiki page, the paper you want is probably the one given in the citations as:

Zipf, George Kingsley (1932). Selected Studies of the Principle of Relative Frequency in Language. Cambridge, MA: Harvard University Press

though you could also use

Mandelbrot, Benoît (1965). "Information Theory and Psycholinguistics". In B.B. Wolman and E. Nagel. Scientific psychology. Basic Books