APA (7th ed.) Citation

Harvey, J., Harvey , J., & Bather, L. (1968). The British constitution (2nd ed.). St. Martin, spr.

Chicago Style (17th ed.) Citation

Harvey, J., J. Harvey , and L. Bather. The British Constitution. 2nd ed. New york: St. Martin, spr, 1968.

MLA (9th ed.) Citation

Harvey, J., et al. The British Constitution. 2nd ed. St. Martin, spr, 1968.