Cita APA (7a ed.)

Bates, A. P. (1964). Privacy: A useful concept? [s.n.].

Cita Chicago Style (17a ed.)

Bates, Alan P. Privacy: A Useful Concept? [S.l.]: [s.n.], 1964.

Cita MLA (9a ed.)

Bates, Alan P. Privacy: A Useful Concept? [s.n.], 1964.