APA (7th ed.) Citation

Gibson, A., Harris, D., & Gagg, J. C. (1965). The Commonwealth (Social studies.). Chatto & Windus.

Chicago Style (17th ed.) Citation

Gibson, A., David Harris, and J. C. Gagg. The Commonwealth. Social studies. London: Chatto & Windus, 1965.

MLA (9th ed.) Citation

Gibson, A., et al. The Commonwealth. Social studies. Chatto & Windus, 1965.