Παραπομπή APA

Cater, C., & Cater, E. (2007). Marine ecotourism between the devil and the deep blue sea. CABI.

Παραπομπή Chicago Style

Cater, Carl, και Erlet Cater. Marine Ecotourism Between the Devil and the Deep Blue Sea. UK: CABI, 2007.

Παραπομπή MLA

Cater, Carl, και Erlet Cater. Marine Ecotourism Between the Devil and the Deep Blue Sea. CABI, 2007.