APA (7th ed.) Citation

Horler, S. The black heart. Hodder and Stoughton.

Chicago Style (17th ed.) Citation

Horler, Sydney. The Black Heart. Hodder and Stoughton.

MLA (8th ed.) Citation

Horler, Sydney. The Black Heart. Hodder and Stoughton.

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