Ricerca [Research]

Berger. Peter L.
[1963]  Invitation to Sociology. A Humanistic Perspective, Penguin, Harmondsworth, 1968

Beveridge, W. I. B.
[1950]  The Art of Scientific Investigation, Random House Vintage Books, New York, 1957

Descartes, René
[1636]  Discours de la Méthode, Flammarion, Paris, 1992

Dewey, John
[1903]  Essays in Experimental Logic, Dover Publications, New York, 1916

Kaplan, Abraham
[1964]  The Conduct of Inquiry. Methodology for Behavioral Science, Chandler Publishing Company, Scranton, Pennsylvania

Myrdal, Gunnar
[1969]  Objectivity in Social Research, Random House, New York

Van Dalen, Deobold B.
[1962]  Understanding Educational Research. An Introduction, Mc-Graw-Hill Book Co., New York, 1979