APA (7th ed.) Citation

Newcombe, S. P., Whymper, E., & Dickes, W. (1851). Little Henry's holiday at the Great Exhibition. Houlston & Stoneman.

Chicago Style (17th ed.) Citation

Newcombe, S. Prout, Edward Whymper, and William Dickes. Little Henry's Holiday at the Great Exhibition. London: Houlston & Stoneman, 1851.

MLA (8th ed.) Citation

Newcombe, S. Prout, et al. Little Henry's Holiday at the Great Exhibition. Houlston & Stoneman, 1851.