Παραπομπή σε μορφή APA (7η εκδ.)

International Symposium on Integrated Approaches to Water Pollution Problems : Lisbon. (1991). Integrated approaches to water pollution problems. Elsevier Applied Science.

Παραπομπή σε μορφή Chicago (17η εκδ.)

International Symposium on Integrated Approaches to Water Pollution Problems : Lisbon. Integrated Approaches to Water Pollution Problems. London: Elsevier Applied Science, 1991.

Παραπομπή σε μορφή MLA (9th εκδ.)

International Symposium on Integrated Approaches to Water Pollution Problems : Lisbon. Integrated Approaches to Water Pollution Problems. Elsevier Applied Science, 1991.