APA (7th ed.) Citation

North American Cement Corp & Cox, H. B. (1932). Method and cost of quarrying, crushing, and grinding limestone at Security quarry of North American Cement Corporation, Security, Md. [publisher not identified].

Chicago Style (17th ed.) Citation

North American Cement Corp and Hazel Bardmess Cox. Method and Cost of Quarrying, Crushing, and Grinding Limestone at Security Quarry of North American Cement Corporation, Security, Md. Washington, D.C.: [publisher not identified], 1932.

MLA (9th ed.) Citation

North American Cement Corp and Hazel Bardmess Cox. Method and Cost of Quarrying, Crushing, and Grinding Limestone at Security Quarry of North American Cement Corporation, Security, Md. [publisher not identified], 1932.