APA (7th ed.) Citation

Heizer, O. S. (1931). Cotton ginning and pressing machinery in Algeria. [publisher not identified].

Chicago Style (17th ed.) Citation

Heizer, Oscar S. Cotton Ginning and Pressing Machinery in Algeria. Washington, D.C.: [publisher not identified], 1931.

MLA (9th ed.) Citation

Heizer, Oscar S. Cotton Ginning and Pressing Machinery in Algeria. [publisher not identified], 1931.