Books typically give a broad, thorough treatment of a subject, usually from a retrospective point of view.
Articles are originally published in journals, magazines and newspapers. They generally provide information that is in-depth and focused, usually from a contemporary point of view.
Journals and other periodicals like magazines and newspapers generally provide information that is in-depth and focused, usually from a contemporary point of view.
If your citation looks like this:
Wold, L.S. (2003). An examination of teachers' "Learning to act on reflection". Reading Research and Instruction, 42(3), 52-74.
Classical Scores Library contains hundreds of thousands of pages of the most important classical music scores, manuscripts, and previously unpublished material, allowing for the study and analysis of more than 8,000 musical scores.