APA (7th ed.) Citation

Smith, A. V. (1931). Opportunity to show road making machinery in China. [publisher not identified].

Chicago Style (17th ed.) Citation

Smith, A. Viola. Opportunity to Show Road Making Machinery in China. Washington, D.C.: [publisher not identified], 1931.

MLA (9th ed.) Citation

Smith, A. Viola. Opportunity to Show Road Making Machinery in China. [publisher not identified], 1931.