References
- 1855 . Zum feineren Bau der Arthropoden , 433 – 433 . Müller's Archiv .
- Monograph on the British Species of Phalangiidæ . Ann. & Mag. Nat. Hist. , xv 395 – 395 . ser. 2.
- On the Anatomy of Phalangium Opilio . Annals of Natural History , xii 153 – 153 . ser. 1.