APA

International Society for Rock Mechanics. Committee on Laboratory Tests. Document no 5, . (1977). Suggested methods for determining hardness and abrasiveness of rocks. ( Int. J. Rock Mech. Min. Sci. Vol 15, s 89-97). Lissabon: International Society for Rock Mechanics. Committee on Laboratory Tests. Document no 5.

Chicago

International Society for Rock Mechanics. Committee on Laboratory Tests. Document no 5, . 1977. Suggested methods for determining hardness and abrasiveness of rocks. ( Int. J. Rock Mech. Min. Sci. Vol 15, s 89-97). Lissabon: International Society for Rock Mechanics. Committee on Laboratory Tests. Document no 5.

Harvard

International Society for Rock Mechanics. Committee on Laboratory Tests. Document no 5, . (1977). Suggested methods for determining hardness and abrasiveness of rocks. ( Int. J. Rock Mech. Min. Sci. Vol 15, s 89-97). Lissabon: International Society for Rock Mechanics. Committee on Laboratory Tests. Document no 5.

MLA

International Society for Rock Mechanics. Committee on Laboratory Tests. Document no 5, . Suggested methods for determining hardness and abrasiveness of rocks. ( Int. J. Rock Mech. Min. Sci. Vol 15, s 89-97). Lissabon: International Society for Rock Mechanics. Committee on Laboratory Tests. Document no 5. 1977.