GRAYSON-SMITH, H. (1967). The changing concepts of science. Prentice-Hall.
Cita Chicago (17th ed.)GRAYSON-SMITH, Hugh. The Changing Concepts of Science. N.J: Prentice-Hall, 1967.
Cita MLA (9th ed.)GRAYSON-SMITH, Hugh. The Changing Concepts of Science. Prentice-Hall, 1967.
Atenció: Aquestes cites poden no estar 100% correctes.