APA (7th ed.) Citation

Viëtor, K. (1949). Goethe, the poet. Harvard University Press.

Chicago Style (17th ed.) Citation

Viëtor, Karl. Goethe, the Poet. Cambridge: Harvard University Press, 1949.

MLA (9th ed.) Citation

Viëtor, Karl. Goethe, the Poet. Harvard University Press, 1949.