APA (7th ed.) Citation

Waller, G. P., Jr. (1930). German market for coin operated machines. [publisher not identified].

Chicago Style (17th ed.) Citation

Waller, George P., Jr. German Market for Coin Operated Machines. Washington, D.C.: [publisher not identified], 1930.

MLA (9th ed.) Citation

Waller, George P., Jr. German Market for Coin Operated Machines. [publisher not identified], 1930.