Parr, R. L., & Parr,Russell. L. (2021). Intellectual Property: Valuation Exploration and Infringement Damages 2021 Cumulative Supplement (5th.). Wiley.

Parr, Russell L., and Parr,Russell. L. Intellectual Property: Valuation Exploration and Infringement Damages 2021 Cumulative Supplement. 5th. New Jersey: Wiley, 2021.

Parr, Russell L., and Parr,Russell. L. Intellectual Property: Valuation Exploration and Infringement Damages 2021 Cumulative Supplement. 5th. Wiley, 2021.