Spencer, H. (1903). Education: Intellectual, moral, and physical. London: Watts & CO.
Chicago Style aipamenaSpencer, Herbert. Education: Intellectual, Moral, and Physical. London: Watts & CO, 1903.
MLA aipamenaSpencer, Herbert. Education: Intellectual, Moral, and Physical. London: Watts & CO, 1903.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.