Notholt, A. J. G., & Jarvis, I. Phosphorite Research and Development. Geological society of London.
Cita Chicago (17th ed.)Notholt, Arthur John George, i Ian Jarvis. Phosphorite Research and Development. London: Geological society of London.
Cita MLA (8th ed.)Notholt, Arthur John George, i Ian Jarvis. Phosphorite Research and Development. Geological society of London.
Atenció: Aquestes cites poden no estar 100% correctes.