Cita APA (7a ed.)

Consejo de Europa, Landheer, B., & Robertson, A. H. (1955). Annuaire européen: European yearbook. Nijhoff.

Cita Chicago Style (17a ed.)

Consejo de Europa, Bartholomeus Landheer, y A. H. Robertson. Annuaire Européen: European Yearbook. The Hague: Nijhoff, 1955.

Cita MLA (9a ed.)

Consejo de Europa, et al. Annuaire Européen: European Yearbook. Nijhoff, 1955.