Cita APA (7a ed.)

Morley, H., & Drummond, J. (1891). Memoir of Thomas Sadler, Ph.D. [s.n.].

Cita Chicago Style (17a ed.)

Morley, Henry, y James Drummond. Memoir of Thomas Sadler, Ph.D. [s.l.]: [s.n.], 1891.

Cita MLA (9a ed.)

Morley, Henry, y James Drummond. Memoir of Thomas Sadler, Ph.D. [s.n.], 1891.