APA (7th ed.) Citation

Miller, D. P. (1928). Sales efforts of German piano industry. [publisher not identified].

Chicago Style (17th ed.) Citation

Miller, Douglas Phillips. Sales Efforts of German Piano Industry. Washington, D.C.: [publisher not identified], 1928.

MLA (9th ed.) Citation

Miller, Douglas Phillips. Sales Efforts of German Piano Industry. [publisher not identified], 1928.