APA (7th ed.) Citation

Tilton, J. E. (2003). On borrowed time?: Assessing the threat of mineral depletion. Resources for the Future.

Chicago Style (17th ed.) Citation

Tilton, John E. On Borrowed Time?: Assessing the Threat of Mineral Depletion. Washington, DC: Resources for the Future, 2003.

MLA (9th ed.) Citation

Tilton, John E. On Borrowed Time?: Assessing the Threat of Mineral Depletion. Resources for the Future, 2003.