APA
Royal Institution of Chartered Surveyors, . (1998). Proposed new Minerals Planning Guidance 5 : Stability in Surface Mineral workings and Tips. London: RICS.
Chicago
Royal Institution of Chartered Surveyors, . 1998. Proposed new Minerals Planning Guidance 5 : Stability in Surface Mineral workings and Tips. London: RICS.
Harvard
Royal Institution of Chartered Surveyors, . (1998). Proposed new Minerals Planning Guidance 5 : Stability in Surface Mineral workings and Tips. London: RICS.
MLA
Royal Institution of Chartered Surveyors, . Proposed new Minerals Planning Guidance 5 : Stability in Surface Mineral workings and Tips. London: RICS. 1998.