APA (7th ed.) Citation

Ackerman, R. H., & Van Dort, W. (1929). Growth of phonograph market in Chile. [publisher not identified].

Chicago Style (17th ed.) Citation

Ackerman, Ralph H., and William Van Dort. Growth of Phonograph Market in Chile. Washington, D.C.: [publisher not identified], 1929.

MLA (9th ed.) Citation

Ackerman, Ralph H., and William Van Dort. Growth of Phonograph Market in Chile. [publisher not identified], 1929.