APA (7th ed.) Citation

DeGolia, D. P. (1930). Porto Rican market for coin operated scales. [publisher not identified].

Chicago Style (17th ed.) Citation

DeGolia, Darwin Paul. Porto Rican Market for Coin Operated Scales. Washington, D.C.: [publisher not identified], 1930.

MLA (9th ed.) Citation

DeGolia, Darwin Paul. Porto Rican Market for Coin Operated Scales. [publisher not identified], 1930.

Warning: These citations may not always be 100% accurate.