APA (7th ed.) Citation

Forbes, W. T. M. (1906). Field tables of Lepidoptera. [publisher not identified].

Chicago Style (17th ed.) Citation

Forbes, William T. M. Field Tables of Lepidoptera. Worcester, Mass.: [publisher not identified], 1906.

MLA (9th ed.) Citation

Forbes, William T. M. Field Tables of Lepidoptera. [publisher not identified], 1906.