Cita APA (7a ed.)

Lipgens, W., & Loth, W. (1991). Documents on the history of European integration. Walter de Gruyter.

Cita Chicago Style (17a ed.)

Lipgens, Walter, y Wilfried Loth. Documents on the History of European Integration. Berlin [etc.]: Walter de Gruyter, 1991.

Cita MLA (9a ed.)

Lipgens, Walter, y Wilfried Loth. Documents on the History of European Integration. Walter de Gruyter, 1991.