Pepper, H. W., & Rowe, J. J. . T. (1985). Individual Tree Protection. Her Majestys Stationery Office.

Pepper, H. W., and J J; Tee Rowe. Individual Tree Protection. London: Her Majestys Stationery Office, 1985.

Pepper, H. W., and J J; Tee Rowe. Individual Tree Protection. Her Majestys Stationery Office, 1985.