Παραπομπή σε μορφή APA (7η εκδ.)

Ervin, D. E., Kahn, J. R., & Livingston, M. L. (2003). Does environmental policy work?: The theory and practice of outcomes assessment. Edward Elgar.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Ervin, David E., James R. Kahn, και Marie Leigh Livingston. Does Environmental Policy Work?: The Theory and Practice of Outcomes Assessment. Cheltenham, UK: Edward Elgar, 2003.

Παραπομπή σε μορφή MLA (9th εκδ.)

Ervin, David E., et al. Does Environmental Policy Work?: The Theory and Practice of Outcomes Assessment. Edward Elgar, 2003.