APA (7th ed.) Citation

Hochleitner, R. (2019). The Firefly guide to minerals, rocks & gems. Firefly Books Ltd..

Chicago Style (17th ed.) Citation

Hochleitner, Rupert. The Firefly Guide to Minerals, Rocks & Gems. Richmond Hill, Ontario: Firefly Books Ltd., 2019.

MLA (8th ed.) Citation

Hochleitner, Rupert. The Firefly Guide to Minerals, Rocks & Gems. Firefly Books Ltd., 2019.

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