APA (7th ed.) Citation

Holt, H. (1930). The ace of spades: A murder mystery. Harrap.

Chicago Style (17th ed.) Citation

Holt, Henry. The Ace of Spades: A Murder Mystery. London: Harrap, 1930.

MLA (8th ed.) Citation

Holt, Henry. The Ace of Spades: A Murder Mystery. Harrap, 1930.

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