@inbook{Wight2003,
author = {Wight, D. and Obasi, A.},
title= {Unpacking the black box: the importance of process data to explain outcomes},
year = {2003},
editor = {Stephenson, J.},
editor = {Imrie, J.},
editor = {Bonell, C.},
booktitle = {Effective sexual health interventions: Issues in experimental evaluation},
address = {Oxford},
publisher = {Oxford University Press},
pages = {151--166},
}