Tillery, B. W. (2012). Physical science (9th ed.). McGraw-Hill.
Cita Chicago (17th ed.)Tillery, Bill W. Physical Science. 9th ed. New York, NY: McGraw-Hill, 2012.
Cita MLA (9th ed.)Tillery, Bill W. Physical Science. 9th ed. McGraw-Hill, 2012.
Atenció: Aquestes cites poden no estar 100% correctes.