Snyder, E. E. (1969). History of the physical sciences. Charles E.Merrill.
Cita Chicago (17th ed.)Snyder, Ernest E. History of the Physical Sciences. Columbus: Charles E.Merrill, 1969.
Cita MLA (9th ed.)Snyder, Ernest E. History of the Physical Sciences. Charles E.Merrill, 1969.
Atenció: Aquestes cites poden no estar 100% correctes.