APA aipamena

WHO. (1982). Control G vitamin A defiuincy and xerophthalmia. Geneva.

Chicago Style aipamena

WHO. Control G Vitamin A Defiuincy and Xerophthalmia. Geneva, 1982.

MLA aipamena

WHO. Control G Vitamin A Defiuincy and Xerophthalmia. Geneva, 1982.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.