Reference

Leila Maria Pessôa, Richard E. Strauss (1998/1999): Cranial size and shape variation, pelage and bacular morphology, and subspecific differentiation in spiny rats, Proechimys albispinus (Is, Geoffroy, 1838), from northeastern Brazil – Bonn zoological Bulletin - früher Bonner Zoologische Beiträge. – 48: 231 - 243.