APA (7th ed.) Citation

Edwards, R. D. (1984). The St. Valentine's Day murders. Quartet.

Chicago Style (17th ed.) Citation

Edwards, Ruth Dudley. The St. Valentine's Day Murders. London: Quartet, 1984.

MLA (9th ed.) Citation

Edwards, Ruth Dudley. The St. Valentine's Day Murders. Quartet, 1984.

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