@inbook{550e85faab6045ab8af10ed6400ab4c1,
title = "Contextual indicators in adult literacy studies: The case of PIAAC",
author = "J.P. Allen and {van der Velden}, R.K.W.",
year = "2014",
month = jan
day = "1",
language = "English",
isbn = "9781439895122",
series = "Chapman & Hall/CRC Statistics in the Social and Behavioral Sciences (Book 13)",
pages = "345--360",
editor = "L. Rutkowski and Davier, {M. von} and D. Rutkowski",
booktitle = "Handbook of international large-scale assessment",
publisher = "CRC Press",
}