APA (7th ed.) Citation

Yeats, W. B. (2009). The golden helmet and the green helmet: Manuscript materials. Cornell Univ. Press.

Chicago Style (17th ed.) Citation

Yeats, William Butler. The Golden Helmet and the Green Helmet: Manuscript Materials. Ithaca: Cornell Univ. Press, 2009.

MLA (9th ed.) Citation

Yeats, William Butler. The Golden Helmet and the Green Helmet: Manuscript Materials. Cornell Univ. Press, 2009.

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