APA (7th ed.) Citation

Mills, F. W. (1933). An index to the genera and species of the Diatomaceae and their synonyms. Wheldon & Wesley, limited.

Chicago Style (17th ed.) Citation

Mills, Frederick William. An Index to the Genera and Species of the Diatomaceae and Their Synonyms. London: Wheldon & Wesley, limited, 1933.

MLA (9th ed.) Citation

Mills, Frederick William. An Index to the Genera and Species of the Diatomaceae and Their Synonyms. Wheldon & Wesley, limited, 1933.