APA (7th ed.) Citation

Carlson, G. (1930). Norwegian market for coin-operated scales. [publisher not identified].

Chicago Style (17th ed.) Citation

Carlson, Gudrun. Norwegian Market for Coin-operated Scales. Washington, D.C.: [publisher not identified], 1930.

MLA (9th ed.) Citation

Carlson, Gudrun. Norwegian Market for Coin-operated Scales. [publisher not identified], 1930.