Palmer, R., Colton, J., & Kramer, L. (2007). A history of the modern world (10th ed.). McGraw-Hill.
Cita Chicago (17th ed.)Palmer, R.R, Joel Colton, i Lloyd Kramer. A History of the Modern World. 10th ed. New York: McGraw-Hill, 2007.
Cita MLA (8th ed.)Palmer, R.R, et al. A History of the Modern World. 10th ed. McGraw-Hill, 2007.
Atenció: Aquestes cites poden no estar 100% correctes.