Vas, E. A. (1986). Dragon kingdom: Journeys through Bhutan. New Delhi.
Chicago Style aipamenaVas, E. A. Dragon Kingdom: Journeys Through Bhutan. Lancer International: New Delhi, 1986.
MLA aipamenaVas, E. A. Dragon Kingdom: Journeys Through Bhutan. New Delhi, 1986.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.