Stephens, J. (1956). Educational psychology: The study of educational growth (rev.ed.). Henry holt.
Lua i Stíl Chicago (17ú heag.)Stephens, J.M. Educational Psychology: The Study of Educational Growth. rev.ed. New york: Henry holt, 1956.
Lua MLA (9ú heag.)Stephens, J.M. Educational Psychology: The Study of Educational Growth. rev.ed. Henry holt, 1956.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.