APA (7th ed.) Citation

Knobel, E. (1899). The grasses, sedges and rushes of the northern United States, illustrated: An easy method of identification. B. Whidden.

Chicago Style (17th ed.) Citation

Knobel, Edward. The Grasses, Sedges and Rushes of the Northern United States, Illustrated: An Easy Method of Identification. Boston: B. Whidden, 1899.

MLA (9th ed.) Citation

Knobel, Edward. The Grasses, Sedges and Rushes of the Northern United States, Illustrated: An Easy Method of Identification. B. Whidden, 1899.