APA (7th ed.) Citation

Hardwick, M., & Hardwick, M. (1975). The 'Upstairs, downstairs' omnibus. Weidenfeld and Nicolson.

Chicago Style (17th ed.) Citation

Hardwick, Michael, and Mollie Hardwick. The 'Upstairs, Downstairs' Omnibus. London: Weidenfeld and Nicolson, 1975.

MLA (8th ed.) Citation

Hardwick, Michael, and Mollie Hardwick. The 'Upstairs, Downstairs' Omnibus. Weidenfeld and Nicolson, 1975.

Warning: These citations may not always be 100% accurate.