Παραπομπή σε μορφή APA (7η εκδ.)

Ninan, K. N., & Steiner, A. Conserving and valuing ecosystem services and biodiversity: Economic, institutional and social challenges. Earthscan.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Ninan, K. N., και Archim Steiner. Conserving and Valuing Ecosystem Services and Biodiversity: Economic, Institutional and Social Challenges. London: Earthscan.

Παραπομπή σε μορφή MLA (9th εκδ.)

Ninan, K. N., και Archim Steiner. Conserving and Valuing Ecosystem Services and Biodiversity: Economic, Institutional and Social Challenges. Earthscan.