@article{article, title = {{An introduction to active galactic nuclei: Classification and unification}}, url = {{}}, year = {{2008}}, month = {{1}}, author = {{Tadhunter C}}, doi = {{10.1016/j.newar.2008.06.004}}, volume = {{52}}, journal = {{New Astronomy Reviews}}, issue = {{6}}, pages = {{227-239}}, note = {{Accessed on 2024/12/22}}}