@inbook{Freedman1988,
author = {Freedman, D. and Thornton, A. and Camburn, D. and Alwin, D. and Young-DeMarco, L.},
title= {The life history calendar: A technique for collecting retrospective data},
year = {1988},
doi = {10.2307/271044},
editor = {Clogg, C.C.},
booktitle = {Sociological Methodology 18},
address = {San Francisco},
publisher = {Jossey-Bass publishers},
pages = {37--68},
}