APA (7th ed.) Citation

Shepherd, J., & Shepherd, J. (2010). 1920s Britain. Shire Publ.

Chicago Style (17th ed.) Citation

Shepherd, Janet, and John Shepherd. 1920s Britain. Oxford [u.a.]: Shire Publ, 2010.

MLA (9th ed.) Citation

Shepherd, Janet, and John Shepherd. 1920s Britain. Shire Publ, 2010.

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