APA (7th ed.) Citation

Eikenberry, W. L. (1919). Problems in botany. Ginn and company.

Chicago Style (17th ed.) Citation

Eikenberry, W. L. Problems in Botany. Boston, New York [etc.]: Ginn and company, 1919.

MLA (9th ed.) Citation

Eikenberry, W. L. Problems in Botany. Ginn and company, 1919.