Παραπομπή APA

Hood, M. A. (2008). River time ecotravel on the worlds rivers.

Παραπομπή Chicago Style

Hood, Mary A. River Time Ecotravel on the Worlds Rivers. Albany, SUNY Press ( State University of New York Press), 2008.

Παραπομπή MLA

Hood, Mary A. River Time Ecotravel on the Worlds Rivers. 2008.