@article{ref1,
title="Class and Caste, II. Gradation",
journal="American journal of sociology",
year="1917",
author="Ross, Edward Alsworth",
volume="22",
number="5",
pages="594-608",
abstract="<p>[Abstract unavailable]</p>",
language="",
issn="0002-9602",
doi="10.1086/212664",
url="http://dx.doi.org/10.1086/212664"
}