1. to recognize and credit an author’s work and ideas.
2. to enable the reader of your paper to find the article (or book, etc.) and read it.
3. to avoid possible copyright and plagiarism problems.
Boston University Libraries provides these image databases.
Associated Press Images CollectionAssociated Press Images Collection is a searchable collection of recent and historical photos from the Associated Press, plus AP graphics, articles, and brief sound clips.
ARTstorARTstor is a database of images from museums, artists, libraries, colleges and universities, scholars, private collections, and photo archives available for teaching, education, and scholarship, with all images cleared for educational use.
AskART AcademicAskART Academic is a database of information about artists, including names, birth and death dates, state or local affiliation, fields in which artist worked, book and periodical references to artist, dealers and museums where works may be viewed, auction prices of works, and some biographical details.
Academic Video OnlineAcademic Video Online delivers more than 67,000 titles spanning a range of subject areas including anthropology, business, counseling, film, health, history, music, and more. It includes documentaries, films, demonstrations, and other content types.