APA (7th ed.) Citation

Boldt, G., Durand, P., & Horion, P. (1961). Grève et lock-out. Luxembourg: CECA.

Chicago Style (17th ed.) Citation

Boldt, Gerhard, Paul Durand, and Paul Horion. Grève Et Lock-out. Luxembourg: CECA, 1961.

MLA (8th ed.) Citation

Boldt, Gerhard, et al. Grève Et Lock-out. Luxembourg: CECA, 1961.