Cita APA (7a ed.)

Roberts, J., & Varley, H. (1876). John Roberts a biographical sketch with Outlines of the Lessons. W. M. Hutchings.

Cita Chicago Style (17a ed.)

Roberts, John, y Henry Varley. John Roberts a Biographical Sketch with Outlines of the Lessons. London: W. M. Hutchings, 1876.

Cita MLA (9a ed.)

Roberts, John, y Henry Varley. John Roberts a Biographical Sketch with Outlines of the Lessons. W. M. Hutchings, 1876.