APA (7th ed.) Citation

(1926). The official vital statistics of the republic of Portugal. League of nations, health organisation.

Chicago Style (17th ed.) Citation

The Official Vital Statistics of the Republic of Portugal. League of nations, health organisation, 1926.

MLA (8th ed.) Citation

The Official Vital Statistics of the Republic of Portugal. League of nations, health organisation, 1926.

Warning: These citations may not always be 100% accurate.