Παραπομπή σε μορφή APA (7η εκδ.)

Govermental Refuse Collection and Disposal Association. (1986). Contracting for residential solid waste collection services. GRCDA.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Govermental Refuse Collection and Disposal Association. Contracting for Residential Solid Waste Collection Services. Maryland: GRCDA, 1986.

Παραπομπή σε μορφή MLA (9th εκδ.)

Govermental Refuse Collection and Disposal Association. Contracting for Residential Solid Waste Collection Services. GRCDA, 1986.