Παραπομπή APA

Basu, R. N. (1979). eradication of smallpox from India. World Health Organisation.

Παραπομπή Chicago Style

Basu, R N. Eradication of Smallpox from India. New Delhi: World Health Organisation, 1979.

Παραπομπή MLA

Basu, R N. Eradication of Smallpox from India. World Health Organisation, 1979.