APA (7th ed.) Citation

White, H. K., Grahame, J., & Gilfillan, G. (1856). The poetical works of Henry Kirke White and James Grahame. James Nichol, [etc., etc.].

Chicago Style (17th ed.) Citation

White, Henry Kirke, James Grahame, and George Gilfillan. The Poetical Works of Henry Kirke White and James Grahame. Edinburgh: James Nichol, [etc., etc.], 1856.

MLA (9th ed.) Citation

White, Henry Kirke, et al. The Poetical Works of Henry Kirke White and James Grahame. James Nichol, [etc., etc.], 1856.