APA (7th ed.) Citation

South, R. (2013). The Moths of the British Isles, First Series Comprising the Families Sphingidae to Noctuidae. Project Gutenberg.

Chicago Style (17th ed.) Citation

South, Richard. The Moths of the British Isles, First Series Comprising the Families Sphingidae to Noctuidae. Project Gutenberg, 2013.

MLA (9th ed.) Citation

South, Richard. The Moths of the British Isles, First Series Comprising the Families Sphingidae to Noctuidae. Project Gutenberg, 2013.

Warning: These citations may not always be 100% accurate.