APA (7th ed.) Citation

Unwin, D. M. (1988). A key to the families of British beetles (Reprinted with minor alterations.). FSC.

Chicago Style (17th ed.) Citation

Unwin, Dennis M. A Key to the Families of British Beetles. Reprinted with minor alterations. Telford: FSC, 1988.

MLA (9th ed.) Citation

Unwin, Dennis M. A Key to the Families of British Beetles. Reprinted with minor alterations. FSC, 1988.