Cita APA (7a ed.)

Als, G. (1991). Histoire quantitative du Luxembourg 1839-1990.

Cita Chicago Style (17a ed.)

Als, Georges. Histoire Quantitative Du Luxembourg 1839-1990. Luxembourg, 1991.

Cita MLA (8a ed.)

Als, Georges. Histoire Quantitative Du Luxembourg 1839-1990. 1991.