Walls, H. J. (1972). Expert witness: My thirty years in forensic science.
Chicago Edition CitationWalls, H J. Expert Witness: My Thirty Years in Forensic Science. London, John Long, 1972.
MLA Edition CitationWalls, H J. Expert Witness: My Thirty Years in Forensic Science. 1972.
Warning: These citations may not always be 100% accurate.