APA (7th ed.) Citation

(1891). Hop plant-louse and remedies to be used against it. [publisher not identified].

Chicago Style (17th ed.) Citation

Hop Plant-louse and Remedies to Be Used Against It. Washington, D.C.: [publisher not identified], 1891.

MLA (9th ed.) Citation

Hop Plant-louse and Remedies to Be Used Against It. [publisher not identified], 1891.