APA (7th ed.) Citation

Laridon, R., Van Miert, K., Boel, R., & Balthazar, H. (1980). Congresbrochure 1980. Gent: AVF.

Chicago Style (17th ed.) Citation

Laridon, Roland, Karel Van Miert, Rik Boel, and Herman Balthazar. Congresbrochure 1980. Gent: AVF, 1980.

MLA (8th ed.) Citation

Laridon, Roland, et al. Congresbrochure 1980. Gent: AVF, 1980.