APA (7th ed.) Citation

Greene, H. (1974). The rivals of Sherlock Holmes: Early detective stories. Penguin.

Chicago Style (17th ed.) Citation

Greene, Hugh. The Rivals of Sherlock Holmes: Early Detective Stories. Harmondsworth [u.a.]: Penguin, 1974.

MLA (9th ed.) Citation

Greene, Hugh. The Rivals of Sherlock Holmes: Early Detective Stories. Penguin, 1974.

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