Παραπομπή APA

Richter, D. A. U., & Williams, P. W. (1998). Assessment and management of urban air quality in Europe. Copenhagen: European Environment agency.

Παραπομπή Chicago Style

Richter, Dorothee A. U., and Peter W. Williams. Assessment and Management of Urban Air Quality in Europe. Copenhagen: European Environment agency, 1998.

Παραπομπή MLA

Richter, Dorothee A. U., and Peter W. Williams. Assessment and Management of Urban Air Quality in Europe. Copenhagen: European Environment agency, 1998.

Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.