Cita APA (7a ed.)

Hartley, T. C. (1999). Constitutional problems of the European Union. Hart Pub.

Cita Chicago Style (17a ed.)

Hartley, Trevor Clayton. Constitutional Problems of the European Union. Oxford, U.K.: Hart Pub, 1999.

Cita MLA (9a ed.)

Hartley, Trevor Clayton. Constitutional Problems of the European Union. Hart Pub, 1999.