APA (7th ed.) Citation

Leland, E. (1930). Mining methods and costs at Pilares mine, Pilares de Nacozari, Sonora, Mexico. [publisher not identified].

Chicago Style (17th ed.) Citation

Leland, Everard. Mining Methods and Costs at Pilares Mine, Pilares De Nacozari, Sonora, Mexico. Washington, D.C.: [publisher not identified], 1930.

MLA (9th ed.) Citation

Leland, Everard. Mining Methods and Costs at Pilares Mine, Pilares De Nacozari, Sonora, Mexico. [publisher not identified], 1930.