Παραπομπή APA

Cattaneo, M., Trifoni, J., & Stroud, T. (2003). World heritage sites of UNESCO: Nature santuaries. OM book service.

Παραπομπή Chicago Style

Cattaneo, Marco, Jasmina Trifoni, και Timothy.,tr Stroud. World Heritage Sites of UNESCO: Nature Santuaries. New Delhi: OM book service, 2003.

Παραπομπή MLA

Cattaneo, Marco, et al. World Heritage Sites of UNESCO: Nature Santuaries. OM book service, 2003.