Παραπομπή σε μορφή APA (7η εκδ.)

ebrary, Inc, Batabyal, A. A., & Nijkamp, P. (2011). Research tools in natural resource and environmental economics. World Scientific.

Παραπομπή σε μορφή Chicago (17η εκδ.)

ebrary, Inc, Amitrajeet A. Batabyal, και Peter Nijkamp. Research Tools in Natural Resource and Environmental Economics. Hackensack, N.J.: World Scientific, 2011.

Παραπομπή σε μορφή MLA (9th εκδ.)

ebrary, Inc, et al. Research Tools in Natural Resource and Environmental Economics. World Scientific, 2011.