Παραπομπή σε μορφή APA (7η εκδ.)

HALL, C. M. &. O. ASPECTS OF TOURISM - NATURE BASED TOURISM IN PERIPHERAL AREAS. VIVA BOOKS.

Παραπομπή σε μορφή Chicago (17η εκδ.)

HALL, C. MICHAEL & OTHERS. ASPECTS OF TOURISM - NATURE BASED TOURISM IN PERIPHERAL AREAS. DELHI: VIVA BOOKS.

Παραπομπή σε μορφή MLA (9th εκδ.)

HALL, C. MICHAEL & OTHERS. ASPECTS OF TOURISM - NATURE BASED TOURISM IN PERIPHERAL AREAS. VIVA BOOKS.