Manny Rubio (2000). «Commonly Available Scorpions». Scorpions: Everything About Purchase, Care, Feeding, and Housing. Barron's. pp. 26–27. ISBN978-0-7641-1224-9. «The Guinness Book of Records claims [...] Heterometrus swammerdami, to be the largest scorpion in the world [9 inches (23 cm)].»
Stephen W. Bullington (1996). «7 No. 5». Natural History and Captive Care of the Flat Rock Scorpion, Hadogenes troglodytes. The Vivarium Magazine. pp. 18-21.