* 1968, [[International Encyclopedia of the Social Sciences]] Edited by [[David L. Sills]] and [[Robert K. Merton]].
* 1968, [[International Encyclopedia of the Social Sciences]] Edited by [[David L. Sills]] and [[Robert K. Merton]].
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* 2001, [[International Encyclopedia of Social and Behavioral Sciences]] / ed.-in-chief [[Neil J. Smelser]]; [[Paul B. Baltes]], Amsterdam [etc.] : Elsevier, 2001-
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* 2001, [[International Encyclopedia of Social and Behavioral Sciences]] / ed.-in-chief [[Neil J. Smelser]]; [[Paul B. Baltes]], Amsterdam : Elsevier