Scheffler, I. (1900). Conditions of knowledge: And introduction to epistemology and education. Scott Foresman.
Cita Chicago (17th ed.)Scheffler, Israel. Conditions of Knowledge: And Introduction to Epistemology and Education. Glenview: Scott Foresman, 1900.
Cita MLA (9th ed.)Scheffler, Israel. Conditions of Knowledge: And Introduction to Epistemology and Education. Scott Foresman, 1900.
Atenció: Aquestes cites poden no estar 100% correctes.