APA (7th ed.) Citation

Du Bois, C., & Unceld, R. H. (1929). Netherland East Indian market for phonographs. [publisher not identified].

Chicago Style (17th ed.) Citation

Du Bois, Coert, and Robert H. Unceld. Netherland East Indian Market for Phonographs. Washington, D.C.: [publisher not identified], 1929.

MLA (9th ed.) Citation

Du Bois, Coert, and Robert H. Unceld. Netherland East Indian Market for Phonographs. [publisher not identified], 1929.