APA

Pratt A., Stel E., . (1899). The flowering plants, grasses, sedges & ferns of Great Britain and their allies, the club mosses, pepperworts, and horsetails. London and New York: F. Warne & Co.

Chicago

Pratt Anne, Stel Edward, . 1899. The flowering plants, grasses, sedges & ferns of Great Britain and their allies, the club mosses, pepperworts, and horsetails. London and New York: F. Warne & Co.

Harvard

Pratt A., Stel E., . (1899). The flowering plants, grasses, sedges & ferns of Great Britain and their allies, the club mosses, pepperworts, and horsetails. London and New York: F. Warne & Co.

MLA

Pratt Anne, Stel Edward, . The flowering plants, grasses, sedges & ferns of Great Britain and their allies, the club mosses, pepperworts, and horsetails. London and New York: F. Warne & Co. 1899.