SPIELVOGEL, J. J. (2006). World history journey across time. McGraw-Hill.
Cita Chicago (17th ed.)SPIELVOGEL, Jackson J. World History Journey Across Time. McGraw-Hill, 2006.
Cita MLA (9th ed.)SPIELVOGEL, Jackson J. World History Journey Across Time. McGraw-Hill, 2006.
Atenció: Aquestes cites poden no estar 100% correctes.