Cita APA (7a ed.)

Freyria, C. (1968). Convention collective de travail. [s.n.].

Cita Chicago Style (17a ed.)

Freyria, Charles. Convention Collective De Travail. [S.l.]: [s.n.], 1968.

Cita MLA (9a ed.)

Freyria, Charles. Convention Collective De Travail. [s.n.], 1968.