Παραπομπή σε μορφή APA (7η εκδ.)
Denmark. Ministry of the Environment, European Environment Agency (EEA), Hansen H. O., & Kristensen P. (1994). European rivers and lakes: Assessment of their environmental state. European Environment Agency (EEA).
Παραπομπή σε μορφή Chicago (17η εκδ.)
Denmark. Ministry of the Environment, European Environment Agency (EEA), Hansen H. O., και Kristensen P. European Rivers and Lakes: Assessment of Their Environmental State. European Environment Agency (EEA), 1994.
Παραπομπή σε μορφή MLA (9th εκδ.)
Denmark. Ministry of the Environment, et al. European Rivers and Lakes: Assessment of Their Environmental State. European Environment Agency (EEA), 1994.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.