Cita APA (7a ed.)

(1899). Merck manual of the materia medica: A ready-reference pocket book for the practicing physician. Merck.

Cita Chicago Style (17a ed.)

Merck Manual of the Materia Medica: A Ready-reference Pocket Book for the Practicing Physician. New York: Merck, 1899.

Cita MLA (8a ed.)

Merck Manual of the Materia Medica: A Ready-reference Pocket Book for the Practicing Physician. Merck, 1899.