APA
Royal Institution of Chartered Surveyors, . (1985). Land surveyors information package 11: acoustic positioning. London: RICS.
Chicago
Royal Institution of Chartered Surveyors, . 1985. Land surveyors information package 11: acoustic positioning. London: RICS.
Harvard
Royal Institution of Chartered Surveyors, . (1985). Land surveyors information package 11: acoustic positioning. London: RICS.
MLA
Royal Institution of Chartered Surveyors, . Land surveyors information package 11: acoustic positioning. London: RICS. 1985.