Cita APA (7a ed.)

Leffland, K., Kæsgaard, H., & Andersson, I. (1998). Comparing environmental impact data on cleaner technologies. Office for Official Publications of the European Communities.

Cita Chicago Style (17a ed.)

Leffland, Karen, Henrik Kæsgaard, y Ingvar Andersson. Comparing Environmental Impact Data on Cleaner Technologies. Luxembourg: Office for Official Publications of the European Communities, 1998.

Cita MLA (9a ed.)

Leffland, Karen, et al. Comparing Environmental Impact Data on Cleaner Technologies. Office for Official Publications of the European Communities, 1998.