APA (7e ed.) Bronvermelding

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

Chicago (17e ed.) Bronvermelding

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

MLA (9e ed.) Bronvermelding

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

Let op: Deze citaties zijn niet altijd 100% accuraat.