Smith, P. G. (1965). Philosophy of education: Introductory studies. Harper & Row.
Lua i Stíl Chicago (17ú heag.)Smith, Philip G. Philosophy of Education: Introductory Studies. New York: Harper & Row, 1965.
Lua MLA (8ú heag.)Smith, Philip G. Philosophy of Education: Introductory Studies. Harper & Row, 1965.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.