APA aipamena

Grazia, S. d. (1962). Of time work and leisure. New York: The Twentieth Century Fund.

Chicago Style aipamena

Grazia, Sebastian de. Of Time Work and Leisure. New York: The Twentieth Century Fund, 1962.

MLA aipamena

Grazia, Sebastian de. Of Time Work and Leisure. New York: The Twentieth Century Fund, 1962.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.