Corbet, Gordon Barclay; Hill, John Edwards (1992). The mammals of the Indomalayan Region:a systematic review. Oxford: Oxford University Press. ISBN0-19-854693-9. OCLC25281229.
Ellerman, John R. (1961). Roonwall, M.L. (biên tập). Rodentia: variation. Fauna of India including Pakistan, Burma and Ceylon. Mammalia. 3 (in 2 parts) (ấn bản 2). Delhi: Manager of Publications. tr. 483–884. OCLC78803208.
Erxleben, Johann Christian Polykarp (1777). Systema regni animalis per classes, ordines, genera, species, varietates cum synonymia et historia animalium. Classis I. Mammalia [Animal kingdom system by class, order, genus, species, varieties with synonyms and animals' history. Class I. Mammalia.] (bằng tiếng La-tinh). 42. Leipzig, Germany: Impensis Weygandianis. OCLC14843832.
Ryley, Kathleen V. (1913). “Scientific results from the mammals survey”. The Journal of the Bombay Natural History Society. Mumbai, India: Bombay Natural History Society. 22: 434–443. ISSN0006-6982. OCLC1536710.
Schreber, Johann Christian Daniel von (1792) [Chapter on The Squirrel first published in 1784]. “Der Springer” [The Squirrel]. Die Säugthiere in Abbildungen nach der Natur, mit Beschreibungen [The Säugthiere in illustrations after nature, with descriptions] (bằng tiếng Đức). 3. Erlangen: Wolfgang Walther. OCLC16860541.
