APA (7th ed.) Citation

Christensen, T. H., Cossu, R., & Stegmann, R. (1999). Sardinia 99: Seventh international waste management and landfill symposium. CISA.

Chicago Style (17th ed.) Citation

Christensen, Thomas H., Raffaello Cossu, and Rainer Stegmann. Sardinia 99: Seventh International Waste Management and Landfill Symposium. Cagliari: CISA, 1999.

MLA (9th ed.) Citation

Christensen, Thomas H., et al. Sardinia 99: Seventh International Waste Management and Landfill Symposium. CISA, 1999.