APA (7th ed.) Citation

(1947). Spearhead: 10 years' experimental writing in America. [publisher not identified].

Chicago Style (17th ed.) Citation

Spearhead: 10 Years' Experimental Writing in America. [New York]: [publisher not identified], 1947.

MLA (9th ed.) Citation

Spearhead: 10 Years' Experimental Writing in America. [publisher not identified], 1947.