Imperial Institute (Great Britain), Great Britain. Imperial Mineral Resources Bureau, & Stone, G. (1920). The Mining laws of the British Empire and of foreign countries. H.M.S.O..
Παραπομπή σε μορφή Chicago (17η εκδ.)Imperial Institute (Great Britain), Great Britain. Imperial Mineral Resources Bureau, και Gilbert Stone. The Mining Laws of the British Empire and of Foreign Countries. London: H.M.S.O., 1920.
Παραπομπή σε μορφή MLA (8th εκδ.)Imperial Institute (Great Britain), et al. The Mining Laws of the British Empire and of Foreign Countries. H.M.S.O., 1920.
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