Whether using primary or secondary sources, in print or online, an essential step in the research process is evaluating your sources. Good scholarship requires careful reading and critical analysis of information.
Adapted from The Information-Literate Historian by Jenny L. Presnell (New York: Oxford University Press, 2007):
Are the author's sources in secondary and reference literature clearly identified with complete citations to allow you to find the original source yourself?
How do the author's bias and perspective inform the arguments and evidence presented?
Image: "Take Along a Book." (191-) 1 print (poster) : color ; 53 x 34 cm. Call Number: POS - US .N65, no. 2 (B size) [P&P]. Library of Congress Prints & Photographs Division. Bookmark: http://www.loc.gov/pictures/item/2002720076/