Heurck, H. F. v., & Baxter, W. E. (1896). A treatise on the Diatomaceae: Containing introductory remarks on the structure, life history, collection, cultivation and preparation of diatoms, and a description and figure typical of every known genus, as well as a description and figure of every species found in the North Sea and countries bordering it, including Great Britain, Belgium, &c. London: W. Wesley.

Heurck, Henri Ferdinand van, and Wynne E. Baxter. A Treatise On the Diatomaceae: Containing Introductory Remarks On the Structure, Life History, Collection, Cultivation and Preparation of Diatoms, and a Description and Figure Typical of Every Known Genus, As Well As a Description and Figure of Every Species Found in the North Sea and Countries Bordering It, Including Great Britain, Belgium, &c. London: W. Wesley, 1896.

Heurck, Henri Ferdinand van, and Wynne E. Baxter. A Treatise On the Diatomaceae: Containing Introductory Remarks On the Structure, Life History, Collection, Cultivation and Preparation of Diatoms, and a Description and Figure Typical of Every Known Genus, As Well As a Description and Figure of Every Species Found in the North Sea and Countries Bordering It, Including Great Britain, Belgium, &c. London: W. Wesley, 1896.