APA (7th ed.) Citation

Childs, P., & Faust, J. B. (1930). Market for typewriter ribbons, carbon paper, and writing ink in Uruguay and Paraguay. [publisher not identified].

Chicago Style (17th ed.) Citation

Childs, Prescott, and John B. Faust. Market for Typewriter Ribbons, Carbon Paper, and Writing Ink in Uruguay and Paraguay. Washington, D.C.: [publisher not identified], 1930.

MLA (9th ed.) Citation

Childs, Prescott, and John B. Faust. Market for Typewriter Ribbons, Carbon Paper, and Writing Ink in Uruguay and Paraguay. [publisher not identified], 1930.