APA (7th ed.) Citation

Sparre, C. The Black Tortoise: Being the Strange Story of Old Frick's Diamond.

Chicago Style (17th ed.) Citation

Sparre, Christian. The Black Tortoise: Being the Strange Story of Old Frick's Diamond.

MLA (9th ed.) Citation

Sparre, Christian. The Black Tortoise: Being the Strange Story of Old Frick's Diamond.

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