Cita APA (7a ed.)

Welch, H. (1956). Antibiotics annual: 1956-1957. Medical Enciclopedia.

Cita Chicago Style (17a ed.)

Welch, Henry. Antibiotics Annual: 1956-1957. New York: Medical Enciclopedia, 1956.

Cita MLA (9a ed.)

Welch, Henry. Antibiotics Annual: 1956-1957. Medical Enciclopedia, 1956.