APA (7th ed.) Citation

Fullerton, H. S. (1927). American and German fountain pens compete in Cologne. [publisher not identified].

Chicago Style (17th ed.) Citation

Fullerton, Hugh S. American and German Fountain Pens Compete in Cologne. Washington, D.C.: [publisher not identified], 1927.

MLA (9th ed.) Citation

Fullerton, Hugh S. American and German Fountain Pens Compete in Cologne. [publisher not identified], 1927.