APA (7th ed.) Citation

Heizer, O. S. (1931). Phosphate extracting equipment will be needed in Algeria. [publisher not identified].

Chicago Style (17th ed.) Citation

Heizer, Oscar S. Phosphate Extracting Equipment Will Be Needed in Algeria. Washington, D.C.: [publisher not identified], 1931.

MLA (9th ed.) Citation

Heizer, Oscar S. Phosphate Extracting Equipment Will Be Needed in Algeria. [publisher not identified], 1931.