Cita APA (7a ed.)

Krämer, L. (1992). Focus on European environmental law. Sweet & Maxwell.

Cita Chicago Style (17a ed.)

Krämer, Ludwig. Focus on European Environmental Law. London: Sweet & Maxwell, 1992.

Cita MLA (9a ed.)

Krämer, Ludwig. Focus on European Environmental Law. Sweet & Maxwell, 1992.