- Maton, Anthea; Jean Hopkins, Charles William McLaughlin, Susan Johnson, Maryanna Quon Warner, David LaHart, Jill D. Wright. Human Biology and Health. Englewood Cliffs, New Jersey, USA: Prentice Hall. 1993. ISBN 0-13-981176-1. OCLC 32308337.
- The Greek word "ήπαρ" was derived from hēpaomai (ηπάομαι): to mend, to repair, hence hēpar actually means "repairable", indicating that this organ can regenerate itself spontaneously in the case of lesion.