David Caute, The Year of the Barricades: A Journey through 1968 (New York: Harper and Row, 1988). Well-written survey of global movements focusing on the New Left.
Mark Kurlansky, 1968: The Year the Rocked the World (New York: Ballantine Books, 2004). Journalistic-style survey of 1968 with good coverage but limited analysis.
Carole Fink, Philipp Gassert, and Detlef Junker, eds., 1968: The World Transformed (New York: Cambridge University Press, 1998). Collection of essays from a path-breaking conference on global revolts.
Tariq Ali and Susan Watkins, 1968, Marching in the Streets (London: Bloomsbury, 1988). Insightful account from members of the New Left in London.
Kristin Ross, May '68 and Its Afterlives (Chicago: University of Chicago Press, 2002). Chronicles events in France during May 1968 and presents the strikes, in particular, as a turning point in French society.
Stanley Hoffman, Decline or Renewal? France Since the 1930s (New York: Viking Press, 1974). Classic analysis of the events of May '68.
Alain Schnapp and Pierre Vidal-Naquet, The French Student Uprising, November 1967-June 1968: An Analytical Record, translated by Maria Jolas (Boston: Beacon Press, 1971). Fascinating collection of short essays and primary documents.
Kieran Williams, The Prague Spring and Its Aftermath: Czechoslovak Politics 1968-1970 (Cambridge: Cambridge University Press, 1997). One of the best of the few book-length works on Prague Spring.
Jaromír Navrátil, ed., The Prague Spring 1968: A National Security Archive Documents Reader (New York: Central European University Press, 1998). Excellent collection of primary documents related to the Prague Spring.
David Farber, Chicago '68 (Chicago: University of Chicago Press, 1988). Book-length survey of the events in Chicago.
Daniel Walker, Rights in Conflict (New York: Bantam Books, 1968). Published version of the government-sponsored investigation of the events in Chicago that became known as the Walker report.