@article{Lewis2013,
author = {Lewis, R. and Marston, C. and Wellings, K.},
title= {Bases, stages and ‘working your way up’: Young people’s talk about non-coital practices and ‘normal’ sexual trajectories},
year = {2013},
doi = {10.5153/sro.2842},
volume = {18},
number = {1},
pages = {233--241},
}