APA (7th ed.) Citation

Galloway, J. V., Kirchner, A. R., & Schoder, W. P. (1931). Milling methods and costs of Minas de Matahambre, S.A., concentrator. [publisher not identified].

Chicago Style (17th ed.) Citation

Galloway, J. V., Adelaide Rosalind Kirchner, and W. P. Schoder. Milling Methods and Costs of Minas De Matahambre, S.A., Concentrator. Washington, D.C.: [publisher not identified], 1931.

MLA (9th ed.) Citation

Galloway, J. V., et al. Milling Methods and Costs of Minas De Matahambre, S.A., Concentrator. [publisher not identified], 1931.