Lesser, I. O. (1987). Resources and strategy: Raw materials in strategic thought and practice from the Industrial Revolution to the present. University of Oxford.
Lua i Stíl Chicago (17ú heag.)Lesser, I. O. Resources and Strategy: Raw Materials in Strategic Thought and Practice from the Industrial Revolution to the Present. England: University of Oxford, 1987.
Lua MLA (8ú heag.)Lesser, I. O. Resources and Strategy: Raw Materials in Strategic Thought and Practice from the Industrial Revolution to the Present. University of Oxford, 1987.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.