APA (7th ed.) Citation

Grünwald, C. d., & Héctor, M. (1963). Bismarck. Planeta.

Chicago Style (17th ed.) Citation

Grünwald, Constantin de, and María Héctor. Bismarck. Barcelona: Planeta, 1963.

MLA (9th ed.) Citation

Grünwald, Constantin de, and María Héctor. Bismarck. Planeta, 1963.

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