APA (7th ed.) Citation

(1950). The american philosophical society year book 1950. The American Philosophical Society.

Chicago Style (17th ed.) Citation

The American Philosophical Society Year Book 1950. Philadelphia: The American Philosophical Society, 1950.

MLA (9th ed.) Citation

The American Philosophical Society Year Book 1950. The American Philosophical Society, 1950.

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