APA (7th ed.) Citation

Allen, R. (1928). Polish market for industrial and educational moving pictures. [publisher not identified].

Chicago Style (17th ed.) Citation

Allen, Ron. Polish Market for Industrial and Educational Moving Pictures. Washington, D.C.: [publisher not identified], 1928.

MLA (9th ed.) Citation

Allen, Ron. Polish Market for Industrial and Educational Moving Pictures. [publisher not identified], 1928.