APA (7th ed.) Citation

Randolph, J. (1931). Rumanian market for carbon paper and typewriter ribbons. [publisher not identified].

Chicago Style (17th ed.) Citation

Randolph, John. Rumanian Market for Carbon Paper and Typewriter Ribbons. Washington, D.C.: [publisher not identified], 1931.

MLA (9th ed.) Citation

Randolph, John. Rumanian Market for Carbon Paper and Typewriter Ribbons. [publisher not identified], 1931.