APA (7th ed.) Citation

(1948). Twentieth century Modern language teaching: Sources and readings. Philosophical library.

Chicago Style (17th ed.) Citation

Twentieth Century Modern Language Teaching: Sources and Readings. New York, NY: Philosophical library, 1948.

MLA (9th ed.) Citation

Twentieth Century Modern Language Teaching: Sources and Readings. Philosophical library, 1948.

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