APA (7th ed.) Citation

Johnstone, J., & Gretton, J. (1939). Germany - hammer or anvil? Hutchinson.

Chicago Style (17th ed.) Citation

Johnstone, J.C, and John Gretton. Germany - Hammer or Anvil? London: Hutchinson, 1939.

MLA (8th ed.) Citation

Johnstone, J.C, and John Gretton. Germany - Hammer or Anvil? Hutchinson, 1939.