APA (7th ed.) Citation

Stevenson, R. L., John, R., & Jones, L. (1966). Treasure island (1st published, new imp.). Longmans.

Chicago Style (17th ed.) Citation

Stevenson, Robert Louis, Roland John, and Leslie Jones. Treasure Island. 1st published, new imp. London: Longmans, 1966.

MLA (9th ed.) Citation

Stevenson, Robert Louis, et al. Treasure Island. 1st published, new imp. Longmans, 1966.