Online First With a DOI
Something that is becoming more common is to view an article online which is nearly ready for publication but not quite. It may not have a volume or issue number, or it may need more formatting but publishers have agreed to an early release as a courtesy to readers.
How to Cite
Cite as you would an article from a database except add Advance online publication after the journal title and before the doi in the reference list.
Bowen, D. H., Greene, J. P., & Kisida, B. (2013). Learning to think critically: A visual art experiment. Educational Researcher. Advance online publication. http://dx.doi.org/10.3102/0013189X13512675