Cita APA (7a ed.)

Easson, A. J. (1979). Can directives impose obligations on individuals? [s.n.].

Cita Chicago Style (17a ed.)

Easson, A. J. Can Directives Impose Obligations on Individuals? [S.l.]: [s.n.], 1979.

Cita MLA (9a ed.)

Easson, A. J. Can Directives Impose Obligations on Individuals? [s.n.], 1979.