BioStor
 | On some mammals collected by Dr. E. Modigliani in Sipora, Mentawei islands Oldfield Thomas (1894) Annali del Museo civico di storia naturale di Genova 14: 660-672 |
 | Mammals collected in eastern Sumatra by Dr. W. L. Abbott during 1903, 1906, and 1907, with descriptions of new species and subspecies Marcus Ward Lyon (1908) Proceedings of The United States National Museum 34: 619-679 |