Παραπομπή σε μορφή APA (7η εκδ.)

United States. General Accounting Office, ebrary, Inc, & Vellios, B. T. (2009). Environmental Protection Agency library network. Nova Science Publishers.

Παραπομπή σε μορφή Chicago (17η εκδ.)

United States. General Accounting Office, Inc ebrary, και Bernard T. Vellios. Environmental Protection Agency Library Network. Hauppauge, N.Y.: Nova Science Publishers, 2009.

Παραπομπή σε μορφή MLA (9th εκδ.)

United States. General Accounting Office, et al. Environmental Protection Agency Library Network. Nova Science Publishers, 2009.