@inbook{Cannell1988,
author = {Cannell, C. and Oksenberg, L.},
title= {Observation of behavior in telephone interviews},
year = {1988},
editor = {Groves, R.M.},
editor = {Biemer, P.P.},
editor = {Lyberg, L.E.},
editor = {Massey, J.T.},
editor = {Nicholls, W.L.},
editor = {Waksberg, J.},
booktitle = {Telephone Survey Methodology},
address = {New York},
publisher = {John Wiley and Sons},
pages = {475--495},
}