References
- Eustachius, B. (1570) Opuscula anatomica. De vena sine pari, Syngramma, p. 1707.
- Bremer, J. L. and Weatherpord, H. L. (1944) Text-Book of Histology, The Blakiston Co., Philadelphia Pa
- Rudbeck, O.
- Miller, W. S. (1940) The Lung, Charles C. Thomas, Springfield, Ill. and Baltimore, Md
- Drinker, C. K. (1950) Pulmonary Edema and Inflammation, Harvard University Press. Cambridge, Mass.
- Gray, H. (1946) Anatomy of the Human Body,, Lea & Febiger Co., Philadelphia Pa
- Quiroz, F. (1944) Tratado de Anatomia Humana,, Porrua Hnos. Co., Mexico, DF