Cita APA (7a ed.)

Butler, S., & Gilfillan, G. (1854). The poetical works of Samuel Butler. James Nichol [etc.].

Cita Chicago Style (17a ed.)

Butler, Samuel, y George Gilfillan. The Poetical Works of Samuel Butler. Edinburgh [etc.]: James Nichol [etc.], 1854.

Cita MLA (9a ed.)

Butler, Samuel, y George Gilfillan. The Poetical Works of Samuel Butler. James Nichol [etc.], 1854.