Cita APA (7th ed.)
ebrary, Inc, & Nata, R. V. (2009). Progress in education. Nova Science Publishers, Inc..
Cita Chicago (17th ed.)
ebrary, Inc, i Robert V. Nata. Progress in Education. New York: Nova Science Publishers, Inc., 2009.
Cita MLA (9th ed.)
ebrary, Inc, i Robert V. Nata. Progress in Education. Nova Science Publishers, Inc., 2009.
Atenció: Aquestes cites poden no estar 100% correctes.