APA (7th ed.) Citation

Webb, S., Webb, B. P., & MacKenzie, N. (1997). The letters of Sidney and Beatrice Webb. University Microfilms International.

Chicago Style (17th ed.) Citation

Webb, Sidney, Beatrice Potter Webb, and Norman MacKenzie. The Letters of Sidney and Beatrice Webb. Ann Arbor: University Microfilms International, 1997.

MLA (9th ed.) Citation

Webb, Sidney, et al. The Letters of Sidney and Beatrice Webb. University Microfilms International, 1997.