APA (7th ed.) Citation

Harper, C. P. (1930). Market for coin operated scales in Philippine Islands. [publisher not identified].

Chicago Style (17th ed.) Citation

Harper, Clarence P. Market for Coin Operated Scales in Philippine Islands. Washington, D.C.: [publisher not identified], 1930.

MLA (9th ed.) Citation

Harper, Clarence P. Market for Coin Operated Scales in Philippine Islands. [publisher not identified], 1930.