APA (7th ed.) Citation

Castle, E. The Lock and Key Library: Classic Mystery and Detective Stories: Modern English.

Chicago Style (17th ed.) Citation

Castle, Egerton. The Lock and Key Library: Classic Mystery and Detective Stories: Modern English.

MLA (9th ed.) Citation

Castle, Egerton. The Lock and Key Library: Classic Mystery and Detective Stories: Modern English.

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