APA (7th ed.) Citation

Twentieth Century drama. Chadwyck Healey/ProQuest.

Chicago Style (17th ed.) Citation

Twentieth Century Drama. Cambridge: Chadwyck Healey/ProQuest.

MLA (9th ed.) Citation

Twentieth Century Drama. Chadwyck Healey/ProQuest.

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