BibTex format
@article{Harker:2011:10.1126/science.1208421,
author = {Harker, JA and Lewis, GM and Mack, L and Zuniga, EI},
doi = {10.1126/science.1208421},
journal = {SCIENCE},
pages = {825--829},
title = {Late Interleukin-6 Escalates T Follicular Helper Cell Responses and Controls a Chronic Viral Infection},
url = {http://dx.doi.org/10.1126/science.1208421},
volume = {334},
year = {2011}
}