APA aipamena

Tilton, J. E. (1977). The future of nonfuel minerals. Brookings Institution.

Chicago Style aipamena

Tilton, John E. The Future of Nonfuel Minerals. Washington: Brookings Institution, 1977.

MLA aipamena

Tilton, John E. The Future of Nonfuel Minerals. Brookings Institution, 1977.