Cita APA (7a ed.)

Taylor, J. B. (1993). Discretion versus policy rules in practice. [s.n.].

Cita Chicago Style (17a ed.)

Taylor, John B. Discretion Versus Policy Rules in Practice. [S.l.]: [s.n.], 1993.

Cita MLA (9a ed.)

Taylor, John B. Discretion Versus Policy Rules in Practice. [s.n.], 1993.