Q:

Standard reference for K-means

When citing the K-means algorithm in a paper, what is the standard reference? 
I ran into this paper through some digging around but I am not entirely sure if this one is still the correct one. 
I could potentially cite ESL but I wanted to know if people here had any opinion on this. 
I am not looking for a reference to a specific implementation of the algorithm, just a generic reference. 

A:

According to wikipedia, the term k-means was first introduced in the reference you refer to.  The usual reference in the computer vision community for the algorithm, which solves the k-means problem, is: 

Lloyd, Stuart P. "Least squares quantization in PCM."  Information Theory, IEEE Transactions on 28.2 (1982): 129-137.